HomeMy WebLinkAbout2021-05-26 EMC - Recycled Water ProjectsREUSEGUIDELINES
VolumeII: RecycledWaterProjects
Prepared by
Hawai‘iStateDepartmentofHealth
WastewaterBranch
January2016
(ReplacesMay15, 2002Version)
January 2016 Vol 2: Recycled Water Projects page 2 of 25
Table of Contents
Sections Page
A. Introduction 3
B. Summary of Approval Process 3
C. Definitions 4
D. Suitable Uses 8
E. Areas Approved for Application 10
F. Distribution System 11
G. BMPs - Design & Installation 11
H. BMPs - Component Identification 13
I. BMPs - Public Education 14
J. BMPs - Owner Responsibility 16
K. BMPs - Operation & Maintenance 18
L. BMPs - Temporary Recycled Water Use 20
M. Application for a Recycled Water Project 21
N. Approval Process 23
O. Converting from Recycled to Potable Water Use 24
P. Updates to Application and Reporting Forms 25
Appendices
A1. Recycled Water Use Maps
B. Recycled Water Project Notes
C. Application Forms
1. General Irrigation with Recycled Water
2. Agricultural Irrigation with Recycled Water
3. Non-Irrigation Use of Recycled Water
4. Temporary Use of R-1 Recycled Water
5. Construction Extension
January 2016 Vol 2: Recycled Water Projects page 3 of 25
A. Introduction
The Department of Health (DOH) has long been an advocate for the use of recycled water
provided that public health and water resources are not compromised. Use of recycled water has
become more significant due to the state's growing population, limited potable water resources,
and wastewater disposal issues.
Since increasingthe safe use of recycled water will help meet the state'sgrowingwaterneeds,the
Guidelines forthe Treatment and Use of RecycledWater (nowreferred to asthe Reuse Water
Guidelines)have been revised to streamlinethe application processandupdate requirements.
The ReuseGuidelines consists of two volumes:
• VolumeI: Recycled Water Facilities addressestechnical requirementsthatmust be met
for the variousqualitiesof recycled water aswell as requirementsto construct or modifya
wastewater reclamationfacility(WWRF).
• VolumeII: RecycledWater Projects coversthe application processto use recycled water
for purposessuch asirrigation,dust control,cleaning,and fire-fightingand establishesbest
management practicesthat applyto the end user.
B. Summary of Approval Process
Following is a summary of the approval process for a project intending to use recycled water:
1. Recycled Water Purveyor:The intended user should first find a recycled water
purveyor to meet his recycled water needs. Following that, the appropriate application
form should be completed and submitted to the DOH.
2. Application Forms:For a project in an area where use of recycled water is not
restricted, the appropriate application form to submit depends on the intended use of
the recycled water.Following are various recycled water application forms:
a. General Irrigation
b. Agricultural Irrigation
c. Non-Irrigation Use
d. Temporary R-1 Use
e. Construction Extension
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3. Application Submittal:If required, the completed application should first be submitted
to the applicable county purveyor. After receiving county approval, the application
should be submitted to the DOH.
4. Approval to Construct:Once the application is reviewed and deemed satisfactory, the
DOH will issue an approval to construct. When construction of the project is
substantially complete, the applicant should provide at least two weeks' notice to the
DOH to conduct an inspection.
5. Approval to Use:DOH will then inspect the project for compliance with requirements.
If acceptable, an approval to use will be issued.
C. Definitions
"Adequate Buffer"means a buffer for spray irrigation that can be achieved by a separation
distance of 500 feet; a physical barrier such as a wall or cliff; tall and dense vegetation; or
irrigating with potable water within the 500 foot buffer zone.
"Agricultural Irrigation"means irrigation used toplant, cultivate, grow and/or produce plants
and crops to provide food, fiber, lumber, biofuel,and medicinal, horticultural, floricultural or
aesthetic products.
"Approved Use Area"means a site with well-defined boundaries where recycled water use has
been approved by the DOH, in accordance with these guidelines and Chapter 62 of the Hawaii
Administrative Rules.
"Best Management Practices (BMPs)"mean the mosteffective andpracticable activities, conduct
prohibitions,treatment requirements,schedules,maintenanceproceduresand otherpracticesto
minimize pollution,control runoff,ponding,spills,leaks,sludge or waste disposal,and public
contact with recycled water,spray,or mist.
"Cross-Connection"means an actual or potential unprotected connection between a water
system used to supply water for drinking purposesand any source or system containing water
that is not approved for drinking or a substance that is not or cannot be designated as safe,
wholesome, and potable. By-pass arrangements, jumper connections, removable sections, swivel
or changeover devices, and other temporary or permanent devices through which, or because of
which backflow could, occur are considered to be cross-connections.
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"Disinfection"means a process which inactivates or removes pathogenic organisms in water by
chemical or physical means.
"DOH"means the Hawaii State Department of Health.
"Drip Irrigation"means application of water from emitters (either on the surface or subsurface)
that are part of the piping system situated alongside the plants or turf to be irrigated and that
discharge at a rate not to exceed 2 gallons per hour per emitter.
"Emitter"means a flow control device which applies water at a single pointwithout a spray or jet.
"Evapotranspiration"means the process by which water is transferred from the land to the
atmosphere by evaporation from the soil and other surfaces and by transpiration from plants.
"Filter"means a unit forcarrying out the filtration process, consisting of both the filter medium
and its housing.
"Food crop"means any crop intended for human consumption.
"Groundwater"means water located underground in the zone of saturation that moves freely to
points of discharge (e.g., springs) and withdrawal (e.g., wells and tunnels). Groundwater includes
water impounded by dikes, perched on geologic strata or low permeability, or floating upon and
displacing salt water. It includes water which comes from artesian and non-artesian sources, as
well as the subflow of streams and underground streams.
"HAR"means the Hawaii Administrative Rules.
"Hose Bib"means a faucet or similar device to which a common garden hose can be readily
attached.
"Industrial Cooling"means cooling of material or air for industrial purposes, but excludes air
conditioning used for human comfort.
"Irrigation"means the intentional applicationof water forpurposesof sustainedplant growth.
"Landscape Impoundment"means an impoundment where recycled water is stored and used for
aesthetic purposes such as landscape irrigation, where public contact with recycled water is not
intended.
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"Mist"means water droplets suspended in air, that are visible to the eye and that fall more
slowly than rain.
"Non-potable"means not suitable for drinking byhumans.
"Overspray"means recycled water which is transmitted through the air to a location other than
where the direct application of recycled water is intended.
"Owner"means the owner of the entity receiving the recycled water, and does not refer to the
property owner.
"Pathogen"means any agent, especially a microorganism, capable of causing disease.
"Person"means any individual, partnership,firm, association, public or private corporation,the
State or any of its political subdivisions, trust estate or any other legal entity (the same as defined
in section 342D-1, HRS).
"Ponding"means retention of recycled water on the ground or man-madesurface for two hours
or more following the cessation of an approved recycled water use activity.
"Potable"means suitable for drinking by humans.
"Purveyor"means one who sells or conveys recycled water to an end user,or to an intermediary
other than a public or private entity providing water service.
"Recycled Water"means treated wastewater intended for use for a beneficial purpose.
"Recycled Water System"means the user's recycled water distribution system, including all
pipes, hoses, distribution lines, storage components, re-pressurization systems, pumps, emitters,
sprinkler heads, and other related components.
"Reclamation or Treatment facility"means an arrangement of devices, structures, equipment,
processes and controls which produces recycled water suitable for its intended use.
"Restricted Recreational Impoundment"means a body of recycled water in which recreation is
limited to fishing, boatingand other non-body-contact water recreational activities.
"R-1"means recycled water where the wastewater has undergone oxidation, filtration and
disinfection. R-1 is considered the highest gradeof recycled water.
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"R-2"means recycled water where the wastewater has undergone oxidation and disinfection.
"R-3"means recycled water where the wastewater has undergone oxidation only.
"Runoff"means flow of water along the surface of the ground or other natural or manmade
surfaces, including but not limited to pedestrian walkways, streets, playground surfaces, and
grassy slopes.
"Spray Irrigation"means application of recycled water to crops to maintain vegetation or support
growth of vegetation by spraying it from sprinklers, micro-sprinklers or orifices in piping.
"Storage"when pertaining to water can consist of two types:
"Open water storage"means aboveground water storage exposed to the atmosphere,
including ponds and open tanks.
"Closed water storage"means water storage that is not exposed to the atmosphere,
including enclosed underground and aboveground units.
"Subsurface Drip Irrigation"means application of recycled water at least 4 inches below the
finished grade, by discharging it from orifices in piping.
"User"means any person, firm, corporation, association, agency or customer receiving recycled
water service.
"Wastewater Branch"means the DOH branch that may receive, review, and approve certain
documents concerning wastewater reclamation facilities and recycled water projects.
Address: Hawaii Department of Health
Wastewater Branch
919 Ala Moana Blvd. # 309
Honolulu, HI 96814
"Wetted Area"means the surface area wetted at completion of irrigation.
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D. Suitable Uses
Suitable use of recycled water depends on its quality and application method. Following are
suitable uses for R-1, R-2, and R-3 recycled water. The DOH may deem other uses suitable on a
case-by-case basis.
1. R-1 Suitable Uses:
a. Irrigation: All landscape and agricultural irrigation via spray,surface drip or
subsurfacedrip irrigation.
b. Homes: Irrigation of a home on agricultural land or condominium propertyregimes
provided there isa recycled manager asdescribedin Section K. Irrigationof single
familyresidential homeswithout a recycled water manager isprohibited.
c. Farm Animals:Drinkingwater for livestock,and poultry with theexception ofdairy
animalsthat produce milk for human consumption.
d. Supplyto impoundments:
1) Restricted recreational impoundmentssuch asgolfcoursehazards,
landscape water features,fountains, waterfalls;
2) Irrigation storage reservoirsand ponds; and
3) Fishhatcherybasins.
e. Dust control:Dampening, wet sweeping and/or wash-down of streets, roads,
parking lots, walkways, etc.;
f. Cleaning:
1) Flushing toilets, urinals, and sanitary sewers where permitted by the
applicable county plumbing code;
2) High pressure water cleaning of surfaces; and
3) Agricultural cleaning to wash down animalssuch ascattle, livestock,animal
pensandhousing.
g. Cooling of power equipment while cutting, coringor drilling pavements, walls and
other hard surfaces;
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h. Water jettingto consolidate backfill material around pipingfor recycled water,
non-potable water, sewage, storm drains, gas and electrical conduits;
i. Washing aggregate and concrete manufacturing;
j. Boiler feed water;
k. Industrial processes and industrial cooling;
l. Cooling in air conditioning systems;
m. Fire-fighting; and
n. Test water for gas pipeline testing.
2. R-2 suitableuses:
a. R-2 subsurface drip irrigation isallowed for:
1) Golf course landscaping;
2) Parks,athleticfields,schoolyards, cemeteries;
3) Above-ground food crops(such asfruit trees) where the edible portion of
the crop hasminimal contact with the recycled water;
4) Impoundmentswithoutfountainsor anyother water featuresthat
generate sprayor mist;
5) Landscapesaround certain residentialpropertysuch as condominiumsthat
have a recycled water manager,asprovided for inSection K,responsible for
the landscape irrigation; and
6) Freeway,roadside,and medial strip landscaping.
b. R-2 surface drip or subsurface drip irrigation isallowed for:
1) Non-edible vegetation inareas with limited publicaccess;
2) Sod farms;
3) Ornamentalplantsfor commercialuse;
4) Fodder,fiber,and seed cropsnot consumedbyhumans; and
5) Timber andtreesnot bearingfood crops.
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c. Although R-2 sprayirrigation is generallyprohibited,R-2 sprayirrigation may be
allowedprovided that an adequate buffer existsbetweenthe areasbeingsprayed
and the adjacent residential orpubliclyaccessible area. An adequate buffercan be
accomplishedby:
1) Separation distance of 500 feet;
2) Physical barrier such as a wall or cliff;
3) Tall and dense vegetation; or
4) Irrigating with potable water within the buffer area.
3. R-3 suitableuses:
a. R-3 drip or subsurface drip irrigation is allowed for:
1) Non-edible vegetation in areas with limited public access;
2) Fodder,fiber,and seed cropsnot consumedbyhumans; and
3) Timber andtreesnot bearingfood crops.
E. Areas Approved for Application
Recycled water shall only be applied (e.g.: sprayed) in approved areas. Areas within the state
fall into three categories:
1. Unrestricted Areas are areas where recycled water application is unconditionally
allowed;
2. Conditional Areas are areas where recycled water application is currently allowed, but
may, in the future, be subject to monitoring requirements or restrictions; and
3. Restricted Areas are areas where recycled water application is prohibited.
Areas designated for approved, conditional and restricted use of recycled water are shown on
maps provided in Appendix A1. Designations or requirements may be added or modified in the
event that significant events, research studies, or findings warrant change.
For projects to be located in conditional areas, contact the DOH Wastewater Branch for
information.
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F. Distribution System
1. Transmission Lines fall under the jurisdiction of the recycled water purveyor and refer
to the piping from the treatment facility to the approved use area, terminating after the
service meter box for each approved use area. The meter shall be approved,purchased,
and calibrated bythe purveyor. Thepurveyor isalso responsible forthe qualityof the
recycled water. Design of newtransmission systems shall conform to the "Water System
Standards" (State of Hawaii,2002)andother applicable requirements.
2. On-Site Distribution Systems fall under the jurisdiction of the recycled water user and
include piping and components downstream of the service meter box for each approved
use area. Unless otherwise specified, the user is responsible for maintaining all on-site
facilities downstream of the service meter box. Design of on-site distribution systems
shall conform to county-adopted plumbing codes and other purveyor requirements.
3. Cross-Connection and Backflow Provisions of the HAR Chapter 11-21 and Backflow
Prevention Devices, Water System Standards, Volume I apply to the recycled water
transmission and distributions systems.
G. BMPs – Design and Installation
Best Management Practices (BMPs) refer to the most effective and practicable activities,
conduct prohibitions, treatment requirements, schedules, maintenance procedures and other
practices to minimize pollution, control runoff, ponding, spills, leaks, sludge or waste disposal,
and public contact with recycled water, spray, or mist.
1. Recycled Water System Design
a. The recycled water irrigation system shall be designed in accordance with good
industry standards and practices, these Guidelines, and applicable codes and
regulations.
b. The design must be approved bythe DOH. Use or disposal of recycled water for
any purpose other than that designated in the approved application submittal is
prohibited.
c. Drinking fountains, picnic tables, barbeques, portable water coolers, and similar
items used by the public should be protected from exposure to recycled water or
mist.
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d. Controls should prevent direct or indirect runoff from the approved use area to
outside areas such as streets, right-of-ways, sidewalks, parking lots, storm drains,
gutters, and water bodies such as streams, ponds, and oceans.
e. Sprinkler heads should be selected with an appropriate spray radius and angle to
minimize public exposure to recycled water spray or mist in publicly accessible
areas.
f. Cross-connections of recycled and potable water are prohibited.
2. Backflow Prevention
a. If an irrigation or water system receives both recycled and potable water, an
approved air gap shall be provided for the potable water system. The minimum
required air gap shall be two times the potable water discharge pipe diameter
but no less than one inch.
b. If a parcel/project is serviced with both potable and recycled water, and the two
systems are not connected to each other, the potable water system shall have a
reduced pressure backflow preventer that is approved by the potable water
purveyor.
3. HoseBibs and Hoses
a. Standardhose bibsin recycled water systemsareprohibited.
b. Secured and color-coded hose bibsrequiringa keyfor accessare acceptable.
c. Quick couplers with lockingpurple capsthat differentiate them fromthose used on
potable water systemsare acceptable.
d. When potable hose bibs are within 60-feet of a recycled water system,
appropriates signs shall be posted to differentiate the use of the two.
e. Hoses used with recycled water systems shall be colored purple (Pantone 512 or
equal), tagged or labeled.
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4. Recycled Water System Construction
a. The irrigation shall be constructed in accordance with its approved design and
applicable industry standards.
b. Automatic irrigation controllers should be identified inside and outside of the
controller housing in accordance with Section H.
c. Whenpotable water andrecycled water linesare in the same area,identification of
potable water mainsisrecommended. Identificationtape usingthe words
"DrinkingWater Line"or"Potable Water Line"isacceptable.
H. BMPs – Component Identification
Recycled water system components shall be identified to distinguish them from potable water
system components.
1. Components to be Identified
a. Piping, valves, valve covers, fittings, quick couplers;
b. Pump exteriors;
c. Back flow devices;
d. Manhole covers;
e. Fire hydrants;
f. Sprinklers; and
g. Emitters.
2. Identification Methods
a. Color Identification: The components listed above should be colored or painted
purple (Pantone 512 or equal).
As much as practicable, it is recommended that this color not be used on
components that are not part of a recycled water system.
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b. Labeling: If color identification is not feasible, or for other components not listed
above (such as meter box covers and controller housings), labeling, stamping,
tagging, or tape with the words "Recycled Water," "Recycled Water – Do Not
Drink," or similar, is acceptable.
1) Identification tape using black or white letters on a purple background
(Pantone 512 or equal) is recommended.
2) Minimum letter height should be one inch. If component size precludes
this, letter size should be as large as possible to clearly communicate that
recycled water is being used.
I. BMPs – Public Education
Recycled water users must educate and inform the public, workers, and any other persons likely
to come into contact with the recycled water, of the potential health hazards arising from
ingestion of or contact with recycled water. Recycled water shouldnever be used for human
consumption. Hands and other areas of the body that come into contact with recycled water
should be washed with soap and potable water.
Recycled water users are responsible for posting warning signs as follows:
1. Content:Signs shall include both written and pictorial warnings. Wording should
indicate:
a. Quality of recycled water being used (i.e. R-1, R-2, or R-3);
b. What the recycled water is being used for; and
c. Appropriate warning.
2. Samples warnings:
a. R-2 RECYCLED WATER USED FOR IRRIGATION. DO NOT DRINK
b. R-1 RECYCLED WATER USED FOR DUST CONTROL. DO NOT DRINK. WASH
THOROUGHLY WITH SOAP & POTABLE WATER IF CONTACT OCCURS.
January 2016 Vol 2: Recycled Water Projects page 15 of 25
3. Location
a. Signs shall be posted in areas where recycled water is being used, within clear
view of the public. Placement shall be along the border of and within the wetted
areas which are publicly accessible.
b. A maximum spacing of 250 feet between signs is recommended.
c. When recycled water is used in a restricted recreational or landscape
impoundment, the impoundment shall have warning signs around its perimeter
with pictorial warnings indicating that the recycled water in the impoundment is
not safe for drinking, wading, swimming or other bodily contact.
d. Warning signs shall also be posted on truck tanks and other equipment used to
distribute recycled water for purposes such as dust control.
4. Size
a. Minimum size of signs shall be 11" x 8.5, unless approved by the DOH.
b. In general, the words and icon should be of sufficient size so that a person 50
feet away is able to read and understand the warning.
5. Samples signs:
a.
R-1 Recycled Water Used for Irrigation
DO NOT DRINK
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b.
c.
J. BMPs – Owner Responsibility
1. Availability of Potable Water:Owners/employersof a recycled water distribution system
shall provide potable water to workers,in aneasilyaccessible area,fordrinkingandfor
washinghands,face,and other bodyareasthat come into contact with recycled water.
2. Employee Training:Owners/employers shall provide trainingto workerswho willhandle
or be exposedto recycled water.
a. If the worker'sprimarylanguage isnot English,trainingshould beprovided in a
languagethe worker understands.
b. Information signson recycled water should beposted in conspicuouslocations with
wordingof sufficient sizetobe easilyread byworkers.
R-2 Recycled Water used for Subsurface Irrigation
DO NOT DRINK.
Wash thoroughly with
soap & potable water if contact occurs.
NO ENTRY
Lake contains R-2 Recycled Water
January 2016 Vol 2: Recycled Water Projects page 17 of 25
c. Training and re-training should be done as often as necessary to ensure that
workers retain relevant information on recycled water. New employees should
be trained as soon as possible.
3. Information for Training:Owners/employersshall inform their workersorallyand in
writingofthe following:
a. Recycled water isnot suitable for drinkingbecauseit maycontain organismsthat
cause illness.
b. Itemssuch asclothingor toolscan transportdisease-causingorganisms.
c. Employeesshould wash handswith soap and water before eating,drinking,and
smoking,and atthe end ofthe employees'workperiod.
d. Employeesshould not eat or bringfood into areasbeing sprayed with recycled
water,areasstill wet with recycled water,or areaswhere recycled water mist is
present. In general,employees should avoid beingin these areasasmuch as
practicable.
e. If anemployee'shandshave come into contact with recycled water,he should keep
fingersandhandsawayfrom hiseyes,nose,and mouth.
f. If anemployeehascutsor breaksin hisskin,he should coverthese areas with
waterproof bandagesorother protection beforeworking with recycled water.
g. If anemployee'shandsare regularlyexposed to recycled water,wearinggloves
impermeable to water maybe appropriate.
h. If anemployee will regularlybeexposedto areaswet with recycled water,wearing
shoesor bootsmaybe appropriate.
i. Employeesshould prevent and minimize over-spray, runoff and pondingof
recycled water. If thisisnot apart of their job,theyshould notifythe recycled
water manager if these conditionsexist.
j. Use of standard hose bibs for recycled water is prohibited.
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k. Method used to identify components in the recycled water system should be
explained.
l. A tour of the purveyor's facility providing the recycled water is recommended to
educate employees on the wastewater treatment processes that produce
recycled water.
K. BMPs – Operation and Maintenance
BMPs for operation and maintenance help to control runoff, overspray, and minimize the
public's exposure to recycled water or mist. Designation of a recycled water manager to
oversee the distribution system will help ensure that BMPs are maintained.
1. Application Rate & Schedule
a. Recycled water should be applied at a rate appropriate to plant uptake and
evapotranspiration rates.
b. Application of recycled water, especially when sprayed in a publicly accessible
area, should be scheduled during times when public exposure to recycled water
is minimal. (Example: 11 pm - 3 am)
c. Recycled water irrigation should not occur during rainy periods.
2. Operation
a. Recycled water application should be regularly examined to prevent excessive
application and to determine the appropriate application rate.
b. Controls should be adjusted and other measures taken to prevent direct or
indirect runoff from the approved use area to outside areas such as streets,
right-of-ways, sidewalks, parking lots, storm drains, gutters, and water bodies
such as streams, ponds, and oceans.
c. Measuresshould be taken to minimize publicand worker contact with recycled
water,spray,or mist. If recycled water spray is contacting areas beyond the
approved use area, sprinklers should be adjusted accordingly. If sprinklers or
other devices cannot be adjusted to control over spray, a drip irrigation system
should be used instead.
January 2016 Vol 2: Recycled Water Projects page 19 of 25
d. The area should be checked for any vector issues arising from the use of recycled
water. If recycled water impoundments attract mosquitoes, rodents, or other
vectors, a vector control plan should be developed and implemented.
e. If recycled water is malodorous, notify the recycled water purveyor.
3. Maintenance
a. The irrigation system should be examined for any maintenance issues; any
necessary repairs or maintenance should be performed immediately.
b. Cross-connection testing should be performed on a regular basis, as appropriate.
c. If a recycled water spill or leak occurs, areas with large ponding should be
pumped to speed the drying process.
d. Recycled water component identification should be regularly examined and
maintained.
1) If purple paint is used for identification, repaint as necessary to ensure
system can be easily identified.
2) If labeling is used for identification, maintain labels and replace as
necessary to ensure labels are easy to read.
e. Recycled water public warning signs should be maintained to ensure that they
are in satisfactory condition and easy to read.
4. Designation of aRecycled Water Manager
The recycled water user shall designate a Recycled WaterManager to oversee the
operation and maintenance ofthe irrigation system. The manager should have a good
working knowledge of the:
a. Recycled water system and its components;
b. System installation,operation,maintenance and repair;
c. Areasapprovedfor application ofrecycled water; and
d. Requirementsofthese Reuse Guidelines.
January 2016 Vol 2: Recycled Water Projects page 20 of 25
5. Manager's Responsibilities
a. For irrigation projects,the Recycled Water Manager shall:
1) Implement applicable BMPs;
2) Establish an irrigation schedule;
3) Ensure proper system operation in accordance with Section K;
4) Coordinate cross-connection control withthe potable water purveyor;
5) Maintain and repair the system asneeded;
6) Logmaintenance and repair workperformed; and
7) Trackrecycled wateruse.
b. Fornon-irrigation projects,the Recycled WaterManager shall:
1) Implement applicable BMPs;
2) Establish a schedule when recycled water willbe used;
3) Ensure proper system operation in accordance with Section K,asapplicable;
4) Maintain and repair the system asneeded;
5) Logmaintenance and repair workperformed; and
6) Trackrecycled wateruse.
6. Equipment Cleaning
Recycled water equipment (such astanks,temporarypiping,temporaryvalves,and
portablepumps)should be cleaned and disinfected before removingthe equipmentfrom
the approved use area. The Recycled Water Manager should ensurethat appropriate
cleaninganddisinfection processesare completed before subsequentuseof the
equipment at another site and should bepresent while cleaningand disinfection occurs.
L. BMPs – Temporary Recycled Water Use
1. Temporary Use:As provided in Section D, R-1 recycled water can be used for temporary
projects such as controlling dust at a construction site or flushing a sewer line.
2. AdjacentAreas:Measures shouldbetaken to ensure that ponding,runoff,and overspray
donot occur in areasadjacent to the approved usearea.
January 2016 Vol 2: Recycled Water Projects page 21 of 25
3. Warning Labels:Vehiclesandequipmentthat store,transport,and distribute recycled
water (such astrucktanks,hoses,and pumps)should have appropriate warninglabelsin
accordance with Section I.
4. Leak Prevention:Vehicle tanksused to transport anddistribute recycled water shall have
watertight valvesand fittingsto prevent leakage.
5. ConvertingfromRecycled to PotableWater Use:If a trucktankhasbeen usedto store
recycled water,the tankmust be cleaned and disinfected before it can be usedto store
potable water.
6. Fire-fighting:Fire hydrantswhich use recycled water shallbe painted purple in accordance
with Section H. Otherfire-fightingequipmentusingrecycled water shall be shall be
identifiedusingcoloror labelingin accordance with Section H.
M. Application for a Recycled Water Project
For a recycled water irrigation project in an unrestricted area, an application must be submitted
to the DOH Wastewater Branch on forms provided by the Branch.
1. Application Forms
a. The appropriate form to submit depends on the intended use of the recycled
water. Thefollowingrecycled water applicationforms are available in AppendixC:
1) General Irrigation
2) Agricultural Irrigation
3) Non-Irrigation Use
4) Temporary R-1 Use
5) Construction Extension
As of the issue date of these Guidelines, current versions of application forms are
provided in Appendix C. These forms may be updated as necessary. Check the
Wastewater Branch website at http://health.hawaii.gov/wastewater or call the
office at (808) 586-4294 for the most current form.
b. Construction plans in accordance with Section M.2 shall be included in the
application submittal.
January 2016 Vol 2: Recycled Water Projects page 22 of 25
c. In general, the application submittal should be prepared by an irrigation specialist,
licensed landscape architect, licensed engineer, or a licensed architect. However,
dependingon the type of project, this may vary as follows:
1) General Irrigation Project: The application should be prepared by an
irrigation specialist, licensed landscape architect, licensed engineer, or a
licensed architect.
2) Agricultural Irrigation Project: The application should be prepared by an
irrigation specialist, licensed landscape architect, licensed engineer, or a
licensed architect. However, if the agricultural area to be irrigated is less
than 15 acres, the application may also be prepared by the property owner
or recycled water user.
3) For non-irrigation construction use, such as dust control, sewer flushing
and high-pressure cleaning, the application should be prepared by a
licensed contractor, licensed engineer or licensed architect.
4) For other types of projects not listed, contact the DOH.
d. The application submittal may be mailed or emailed to the DOH Wastewater
Branch. However, construction plans must be submitted in hard copy. If an
application submittal is required by an applicable county, the submittal should be
approved by the countybefore it is submitted to the DOH. Submittal instructions
are provided on the forms.
2. Construction Plans
The applicant should ensure that submitted plans are legible. For plans that have been
reduced in size, a graphic scale should be shown.
a.For all projects, construction plans should provide the following information:
1) Area to be irrigated (Color, shade, mark or hatch the area);
2) Names of surrounding properties and/or tax map keys;
3) Names of roads and structures adjacent to irrigated area;
4) Publicly accessible areas;
5) Recycled water system components and method of identification in
accordance with Section H;
6) Applicable project notes contained in Appendix B;
January 2016 Vol 2: Recycled Water Projects page 23 of 25
7) Applicable warning signs in accordance with Section I;
8) Recycled water storage reservoirs or impoundments;
9) Meter serving as the demarcation between purveyor and user;
10) Location of backflow and cross-connection preventers;
11) Cross-connection survey/analysis for existing developments converting
their irrigation system to use recycled water. The Application Preparer is
responsible for ensuring that this is done prior to charging the system with
recycled water, and preferably prior to design.
b.For projects other than agricultural projects, the following information, (if
applicable) should also be provided:
12) Distribution lines, pumps,valves, and covers;
13) Adequate buffers;
14) Recycled water meters, pressure gauges, and sensors;
15) Filters;
16) Sprinklers; and
17) Emitters.
N. Approval Process
1. Approval to Construct
Once the DOH has determined that the application submittal conforms to HAR Title 11,
Chapter 62 and these Guidelines, the DOH will issue an Approval to Construct to the
intended use, with copy to the Application Preparer.
2. Expiration of Approval to Construct
If construction of an approved project is not commenced within two years of the Approval
to Construct issue date,is stopped for a period of two years or more, or is not completed
within a reasonable time,the Approval to Construct will expire with respect to the
authorized construction. An approved extension is necessary to extend the Approval to
Construct; otherwise a new application is required.
January 2016 Vol 2: Recycled Water Projects page 24 of 25
3. Approved Extension
If an Approval to Construct has expired,the owner may request an extension by
submitting a Construction Extension form to the DOH. The following information should
be included:
a. Project name and file number;
b. Reason for the extension;
c. Estimated date of construction commencement;
d. Updates or changes to the original application submittal; and
e. Construction plans that have been modified.
4. Construction Inspections
When the project is completed to the applicant'ssatisfaction, the applicant shall inspect
the project and submit an inspection report to the DOH, along with As-Built plans and an
Operation and Maintenance manual.
When the recycled water project is fully operable,the DOH will temporarily allow recycled
water start-up while it conducts its inspection.
5. Approval to Use
Once the DOH determines that the project is consistent with the application submittal,
HAR Chapter 62 and these Guidelines, the DOH will issue an Approval to Use to the
recycled water user, with copy to the Application Preparer and recycled water purveyor.
6. Operation & Maintenance Inspections
The DOH may periodically conduct operation and maintenance inspectionsof the recycled
water system, including storage impoundments, distribution system, and area where the
recycled water is being applied. The DOH may also request and examine any applicable
records such as the volume of recycled water used.
O. Converting from Recycled to Potable Water Use
If a water distribution system for recycled water is later intended to distribute potable water,
system disinfection shall conform to the potable water purveyor's requirements.
January 2016 Vol 2: Recycled Water Projects page 25 of 25
1. Intent to Convert
Prior to system disinfection, the purveyor shall send a letter of intent to the DOH. The
letter should identify the purveyor's contact who will certify that the distribution system
meets the purveyor's potable use requirements. The letter should include:
a. Purveyor's name;
b. Contact's name;
c. Street address;
d. Tax Map Key;
e. Phone number;
f. Email address;
g. Description of the conversion and disinfection process;
h. Estimated date for purveyor's certification; and
i. Estimated completion date of conversion.
2. Conversion Notification
The purveyor should notify the DOH in writing once system conversion has been
completed.
3. Color Identification
Component color identification or labels indicatinguse of recycled water in the system
should be removed.
P. Updates to Application and Reporting Forms
As of the issue date of these Guidelines, current forms are provided in the Appendix C.
Since forms may be updated from time to time, check the Wastewater Branch website
at http://health.hawaii.gov/wastewater or contact the office at (808) 586-4294 for the
most current form.
Appendix A1: Recycled Water Use Maps
January 2016 Appendix A1 - Recycled Water Use Maps page A1 of 8
Recycled water use maps designate areas where the use of recycled water is restricted,
conditional, or unrestricted. Although most areas allow for unrestricted recycled water use,
certain sensitive areas that may be potentially impacted by recycled water use are subject to
notification and monitoring requirements.
Figures 1 through 6 provide maps of the main Hawaiian Islands (Oahu, Maui, Hawaii Island,
Kauai, Molokai and Lanai). Restricted areas are shown in red, conditional areas in yellow and
unrestricted areas in green.
A. Restricted Areas
1. Restricted areas are as follows:
a. Areas within the Zone B capture zone delineation (CZD) for public drinking water
sources that draw water from a shaft excavated along the surface of the water
table where groundwater travel to the shaft is two years or less.
b. Areas within a 1,000 foot radius of zones designated as Ground Water under the
Direct Influence (GWDUI) of surface water (also a Zone B CZD).
c. Areas within 1,000 feet of wetlands, ponds or enclosed bays that fall within a
designated reserve or protected conservation district.
2. Restricted areas are subject to the following requirements:
a. Notification of agencies or entities, such as drinking water purveyors or
protected conservation district or reserve managers, involved with or connected
to the potentially impacted area.
b. Chemical analysis of designated constituents in the effluent recycled water for
treatment plants supplying more 10,000 gallons per day.
c. Hydro-geologic study to predict the impact of recycled water.
d. Possible soil or ground water monitoring based on the results of the items 2 and
3 above.
Appendix A1: Recycled Water Use Maps
January 2016 Appendix A1 - Recycled Water Use Maps page A2 of 8
B. Conditional Areas
1. Conditional areas are as follows:
a. All public drinking water CZDs;
b. Designated reserves; and
c. Protected conservation districts, excluding those specifically designated under
Restricted Areas.
2. Conditional areas are subject to the following requirements:
a. Notification of agencies or entities, such as drinking water purveyors or
protected conservation district or reserve managers, involved with or connected
to the potentially impacted area.
b. Chemical analysis of designated constituents in the effluent recycled water for
treatment plants supplying more 10,000 gallons per day.
C. Unrestricted Areas
Unrestricted areas are shaded in green and include all areas not designated as
Restricted or Conditional.
Additional details concerning requirements for Restricted or Conditional Areas will follow in
Appendix A.2, to be provided at a later date. For current applications to use recycled water
over a restricted or conditional area, contact the DOH.
Appendix A1: Recycled Water Use Maps
January 2016 Appendix A1 - Recycled Water Use Maps page A3 of 8
Figure 1. Oahu
Appendix A1: Recycled Water Use Maps
January 2016 Appendix A1 - Recycled Water Use Maps page A4 of 8
Figure 2. Maui
Appendix A1: Recycled Water Use Maps
January 2016 Appendix A1 - Recycled Water Use Maps page A5 of 8
Figure 3. Hawaii Island
Appendix A1: Recycled Water Use Maps
January 2016 Appendix A1 - Recycled Water Use Maps page A6 of 8
Figure 4. Kauai
Appendix A1: Recycled Water Use Maps
January 2016 Appendix A1 - Recycled Water Use Maps page A7 of 8
Figure 5. Molokai
Appendix A1: Recycled Water Use Maps
January 2016 Appendix A1 - Recycled Water Use Maps page A8 of 8
Figure 6. Lanai
Appendix B: Recycled Water Project Notes
January 2016 Project Notes page 1 of 1
1.Standards:Horizontal and vertical clearances between potable water, utility and recycled
water lines, minimum easement or right-of-way distances, minimum cover and other
requirements for non-potable lines shall conform to the "Water System Standards"
Department of Water, County of Kauai; Board of Water Supply, City and County of
Honolulu; Department of Water Supply, County of Maui; Department of Water Supply,
County of Hawaii; Volume 1 [26], county-adopted plumbing code, as amended, and other
water purveyor requirements.
2.Color Identification:Recycled water system components, including the following, shall be
colored or painted purple (Pantone 512 or equal):piping; valves; valve covers; fittings;
quick couplers; pump exteriors; back flow devices; manhole covers; fire hydrants;
sprinklers; and emitters.As much as practicable, it is recommended that this color not be
used on components that are not part of a recycled water system.
3. Labeling:If color identification is not feasible, or for other components not listed above
(such as meter box covers and controller housings), labeling, stamping, tagging, or tape
with the words "Recycled Water," "Recycled Water – Do Not Drink," or similar, is
acceptable.
a. Identification tape using black or white letters on a purple background (Pantone 512
or equal) is recommended.
b. Minimum letter height should be one inch. If component size precludes this, letter
size should be as large as possible to clearly communicate that recycled water is
being used.
4. Signage:To caution the public when recycled water is being used, signs with appropriate
verbiage, recycled water quality, and pictorial icon shall be posted, as provided in the
construction plans and/or details.
Appendix C: Recycled Water Application Forms
1. General Irrigation
2. Agricultural Irrigation
3. Non-Irrigation Use
4. Temporary R-1 Use
5. Construction Extension
STATE OF HAWAII DEPARTMENT OF HEALTH WASTERWATER BRANCH
RECYCLED WATER APPLICATION FORM: GENERAL IRRIGATION
March 2018 General Irrigation Page 1 of 2
A.APPLICANT INFORMATION
Name: Street, City, State & Zip Code:
Title: Phone Number:
Company: Email Address:
B.PROJECT INFORMATION
Project: Property Owner’s Name:
Site Description or Address: Property Owner’s Street, City, State & Zip Code:
Property Owner’s Phone Number:
Project Tax Map Key: Property Owner’s Email Address:
C.WASTEWATER RECLAMATION FACILITY (WWRF) SUPPLYING RECYCLED WATER
WWRF: Recycled Water Quality:
R-1 R-2 R-3
D.IRRIGATION PLAN Include construction plans in accordance with Reuse Guidelines, Vol. 2, Section M.
Irrigated Area (acres): Estimated Water Use (gpd):
Area Designation: Refer to Reuse Guidelines, Vol.2, App. A1 & https://health.hawaii.gov/epo/egis/
Unrestricted Conditional Restricted
Irrigation Schedule to Minimize Public Contact with Recycled Water (eg: M, W, F: 11 p.m. – 3 a.m.):
Irrigation Methods to be used (eg: spray, surface drip, subsurface, combination, etc.):
Methods to minimize public/worker contact with recycled water or mist:
STATE OF HAWAII DEPARTMENT OF HEALTH WASTERWATER BRANCH
RECYCLED WATER APPLICATION FORM: GENERAL IRRIGATION
March 2018 General Irrigation Page 2 of 2
E.FOR R-2 ONLY: If spray irrigation of R-2 is proposed, describe provisions for an adequate buffer.
F.RECYCLED WATER MANAGER (responsible for implementing best management practices)
Name: Street, City, State & Zip Code:
Title: Phone Number:
Company: Email Address:
G.APPLICATION PREPARER (irrigation specialist, licensed architect, landscape architect, or licensed engineer)
Name: Street, City, State & Zip Code:
Title: Phone Number:
Company: Email Address:
H.RESPONSIBLE OFFICIAL'S CERTIFICATION (owner's representative)
I certify that the information provided is true and complete to the best of my knowledge and belief; that
applicable BMPs will be implemented; and that compliance with HAR, Chapter 11-21, Backflow Prevention
Devices; Water System Standards, Volume I; and Owner Responsibility (Section J of the Guidelines) will be
maintained.
Name: Street, City, State & Zip Code:
Title: Phone Number:
Company: Email Address:
Signature:Date:
APPLICATION SUBMITTAL
Submit application via mail or email.
Submit electronic file of construction plans and provide hard copy. Include information per section M
of Volume 2: Recycled Water Projects, available at http://health.hawaii.gov/wastewater/home/reuse/
Mail to: Wasteater Branch, 2827 Waimano Home Rd #207, Pearl City, HI 96782
or Email: april.matsumura@doh.hawaii.gov
STATE OF HAWAII DEPARTMENT OF HEALTH WASTERWATER BRANCH
RECYCLED WATER APPLICATION FORM: AGRICULTURAL IRRIGATION
March 2018 Agricultural Irrigation Page 1 of 2
A.APPLICANT INFORMATION
Name: Street, City, State & Zip Code:
Title: Phone Number:
Company: Email Address:
B.PROJECT INFORMATION
Project: Property Owner’s Name:
Site Description or Address: Property Owner’s Street, City, State & Zip Code:
Property Owner’s Phone Number:
Project Tax Map Key: Property Owner’s Email Address:
C.WASTEWATER RECLAMATION FACILITY (WWRF) SUPPLYING RECYCLED WATER
WWRF: Recycled Water Quality:
R-1 R-2 R-3
D.IRRIGATION PLAN Include construction plans in accordance with Reuse Guidelines, Vol. 2, Section M.
Irrigated Area (acres): Estimated Water Use (gpd):
Area Designation: Refer to Reuse Guidelines, Vol.2, App. A1 & https://health.hawaii.gov/epo/egis/
Unrestricted Conditional Restricted
List crops to be grown. Crops irrigated with R-3 may not be used for human consumption.
Irrigation Methods to be used (eg: spray, surface drip, subsurface, combination, etc.):
Methods to minimize public/worker contact with recycled water or mist:
E.FOR R-2 ONLY: If spray irrigation of R-2 is proposed, describe provisions for an adequate buffer.
STATE OF HAWAII DEPARTMENT OF HEALTH WASTERWATER BRANCH
RECYCLED WATER APPLICATION FORM: AGRICULTURAL IRRIGATION
March 2018 Agricultural Irrigation Page 2 of 2
F.RECYCLED WATER MANAGER (responsible for implementing best management practices)
Name: Street, City, State & Zip Code:
Title: Phone Number:
Company: Email Address:
G.APPLICATION PREPARER (irrigation specialist, licensed architect, landscape architect, or licensed engineer)
Name: Street, City, State & Zip Code:
Title: Phone Number:
Company: Email Address:
H.RESPONSIBLE OFFICIAL'S CERTIFICATION (owner's representative)
I certify that the information provided is true and complete to the best of my knowledge and belief; that
applicable BMPs will be implemented; and that compliance with HAR, Chapter 11-21, Backflow Prevention
Devices; Water System Standards, Volume I; and Owner Responsibility (Section J of the Guidelines) will be
maintained.
Name: Street, City, State & Zip Code:
Title: Phone Number:
Company: Email Address:
Signature:Date:
APPLICATION SUBMITTAL
Submit application via mail or email.
Submit electronic file of construction plans and provide hard copy. Include information per section M
of Volume 2: Recycled Water Projects, available at http://health.hawaii.gov/wastewater/home/reuse/
Mail to: Wasteater Branch, 2827 Waimano Home Rd #207, Pearl City, HI 96782
or
Email: april.matsumura@doh.hawaii.gov
STATE OF HAWAII DEPARTMENT OF HEALTH WASTERWATER BRANCH
RECYCLED WATER APPLICATION FORM: NON-IRRIGATION USE
March 2018 Non-Irrigation Use Page 1 of 2
A. APPLICANT INFORMATION
Name:
Street, City, State & Zip Code:
Title:
Phone Number:
Company:
Email Address:
B. PROJECT INFORMATION
Project:
Property Owner’s Name:
Site Description or Address:
Property Owner’s Street, City, State & Zip Code:
Property Owner’s Phone Number:
Project Tax Map Key:
Property Owner’s Email Address:
C. WASTEWATER RECLAMATION FACILITY (WWRF) SUPPLYING RECYCLED WATER
WWRF:
Recycled Water Quality:
R-1 R-2 R-3
D. PLANNED USE: If applicable, include construction plans in accordance with Reuse Guidelines, Vol. 2, Section M.
Describe use of recycled water:
Estimated Water Use (gpd):
Methods to minimize public/worker contact with recycled water or mist:
STATE OF HAWAII DEPARTMENT OF HEALTH WASTERWATER BRANCH
RECYCLED WATER APPLICATION FORM: NON-IRRIGATION USE
March 2018 Non-Irrigation Use Page 2 of 2
E.RECYCLED WATER MANAGER (responsible for implementing best management practices)
Name: Street, City, State & Zip Code:
Title: Phone Number:
Company: Email Address:
F.APPLICATION PREPARER
Name: Street, City, State & Zip Code:
Title: Phone Number:
Company: Email Address:
G.RESPONSIBLE OFFICIAL'S CERTIFICATION (owner's representative)
I certify that the information provided is true and complete to the best of my knowledge and belief; that
applicable BMPs will be implemented; and that compliance with HAR, Chapter 11-21, Backflow Prevention
Devices; Water System Standards, Volume I; and Owner Responsibility (Section J of the Guidelines) will be
maintained.
Name: Street, City, State & Zip Code:
Title: Phone Number:
Company: Email Address:
Signature:Date:
APPLICATION SUBMITTAL
Submit application via mail or email.
Submit electronic file of construction plans and provide hard copy. Include information per section M
of Volume 2: Recycled Water Projects, available at http://health.hawaii.gov/wastewater/home/reuse/
Mail to: Wasteater Branch, 2827 Waimano Home Rd #207, Pearl City, HI 96782 or
Email: april.matsumura@doh.hawaii.gov
STATE OF HAWAII DEPARTMENT OF HEALTH WASTERWATER BRANCH
RECYCLED WATER APPLICATION FORM: TEMPORARY R-1 USE
March 2018 Temporary R-1 Use Page 1 of 2
A. APPLICANT INFORMATION
Name:
Street, City, State & Zip Code:
Title:
Phone Number:
Company:
Email Address:
B. PROJECT INFORMATION
Project:
Property Owner’s Name:
Site Description or Address:
Property Owner’s Street, City, State & Zip Code:
Property Owner’s Phone Number:
Project Tax Map Key:
Property Owner’s Email Address:
C. WASTEWATER RECLAMATION FACILITY SUPPLYING R-1 RECYCLED WATER
D. R-1 USE (Select below)
Dust control
Temporary irrigation & erosion stabilization
Sewer line flushing
Sewer line pressure testing
Other – Describe:
E. PERIOD OF USE
Start date:
End date:
Methods to minimize public or worker contact with recycled water or mist:
F. FOR TEMPORARY R-1 IRRIGATION: Include plans in accordance with Reuse Guidelines, Vol. 2, Section M or attach map
showing areas where R-1 to be used and names of surrounding properties, roads and structures.
Irrigated Area (acres):
Estimated Water Use (gpd):
Area Designation: Refer to Reuse Guidelines, Vol.2, App. A1 & https://health.hawaii.gov/epo/egis/
Unrestricted Conditional Restricted
STATE OF HAWAII DEPARTMENT OF HEALTH WASTERWATER BRANCH
RECYCLED WATER APPLICATION FORM: TEMPORARY R-1 USE
March 2018 Temporary R-1 Use Page 2 of 2
Irrigation Methods to be used (eg: spray, surface drip, subsurface, combination, etc.):
G.RECYCLED WATER MANAGER (responsible for implementing best management practices)
Name: Street, City, State & Zip Code:
Title: Phone Number:
Company: Email Address:
H.APPLICATION PREPARER (irrigation specialist, licensed architect, landscape architect, or licensed engineer)
Name: Street, City, State & Zip Code:
Title: Phone Number:
Company: Email Address:
I.RESPONSIBLE OFFICIAL'S CERTIFICATION (owner's representative)
I certify that the information provided is true and complete to the best of my knowledge and belief; that
applicable BMPs will be implemented; and that compliance with HAR, Chapter 11-21, Backflow Prevention
Devices; Water System Standards, Volume I; and Owner Responsibility (Section J of the Guidelines) will be
maintained.
Name: Street, City, State & Zip Code:
Title: Phone Number:
Company: Email Address:
Signature:Date:
APPLICATION SUBMITTAL
Submit application via mail or email.
Submit electronic file of construction plans and provide hard copy. Include information per section M
of Volume 2: Recycled Water Projects, available at http://health.hawaii.gov/wastewater/home/reuse/
Mail to: 2827 Waimano Home Rd #207, Pearl City, HI 96782
or Email: april.matsumura@doh.hawaii.gov
STATE OF HAWAII DEPARTMENT OF HEALTH WASTERWATER BRANCH
RECYCLED WATER APPLICATION FORM: CONSTRUCTION EXTENSION
January 2016 Construction Extension Page 1 of 1
A.APPLICANT INFORMATION
Name: Street, City & Zip Code:
Title: Phone Number:
Company: Email Address:
B.PROJECT INFORMATION
Project: File number :
Site Description or Address:
C.CONSTRUCTION EXTENSION
Revised estimated start date:
Reason for Extension:
D.DESCRIBE CHANGES TO ORIGINAL APPLICATION. Attach relevant documents.
E.APPLICATION PREPARER:
Name: Street, City & Zip Code:
Title: Phone Number:
Company: Email Address:
Signature & Date:
APPLICATION SUBMITTAL
Submit application form via mail, email or both.
Submit electronic file of construction plans, as well as a hard copy. Include information per section M of
Vol II: Recycled Water Projects.
Mail to: Wasteater Branch,
Email: april.matsumura@doh.hawaii.gov