Maui Department of Water Supply Hydrant Use, Temporary Meter, Meter Install and Account Reads Help
If you need temporary construction water, want to use water from a hydrant, need a new water meter, meter upgrade, relocation, removal, usage read, billing account support or emergency water response, this guide explains the official Maui DWS contact routes and forms in simple steps.
County of Maui Department of Water Supply uses different official routes for temporary construction meters, new water service, meter upgrades, meter relocations, meter removals, hydrant-related concerns, billing questions, account usage and emergency leaks.
🧾 Temporary meter, hydrant use or meter request?
Temporary construction meter: Use the official DWS Temporary Construction Meter request in MAPPS and upload the completed Temporary Meter Application.
New meter / upgrade / relocation / removal: Use the official DWS Water Service Request in MAPPS.
Hydrant leak or urgent issue: Call the DWS 24-hour emergency hotline at 808-270-7633.
Maui Water Department Hydrant, Meter and Reads Quick Facts
The Department of Water Supply main office is listed at 200 S. High Street, Kalana O Maui Building, 5th Floor, Wailuku, HI 96793. DWS contact information lists 808-270-7816 for Administration, 808-270-7730 for Customer Service/Billing and 808-270-7633 for the 24-hour emergency hotline.
Temporary construction meters and water service requests are handled through Maui MAPPS. A temporary construction meter request requires the Temporary Meter Application and supporting documentation. New service, meter upgrade, meter relocation and meter removal use the DWS Water Service Request.
What This Maui DWS Hydrant and Meter Guide Covers
Maui DWS Hydrant Use: What Contractors and Customers Should Know
Fire hydrants are part of the public water and fire protection system. Drawing water from a hydrant without proper authorization can affect pressure, water quality, billing accuracy and emergency readiness.
The official Maui DWS Water Services page includes rules covering use of and damage to fire hydrants, change in hydrant location, and responsibility for maintenance and operation of private hydrants. Contractors needing temporary water should normally follow the temporary construction meter process instead of connecting informally.
Do not use hydrants casually
Hydrant use needs DWS authorization and proper control to protect the public water system.
Use official processTemporary construction water
Use the DWS Temporary Construction Meter process through MAPPS.
MAPPS DWS RequestConfirm whether hydrant water is really needed
If the project needs temporary construction water, check the temporary construction meter route first.
Do not connect without approval
Do not attach hoses, meters or equipment to hydrants unless DWS has approved the correct process and equipment.
Report hydrant leaks quickly
If a hydrant is leaking, damaged, knocked over or causing a water safety concern, call 808-270-7633.
How to Request a Maui Temporary Construction Meter
Maui DWS temporary construction meters are primarily used to provide construction projects with temporary water service. The official form page says the Temporary Meter Application is used to apply for temporary water service, and the MAPPS page explains that the request is submitted through Customer Self Service.
The temporary construction meter instructions say applicants need to complete the Temporary Meter Application form, provide required information and documentation, and upload everything during the online DWS request.
Download the Temporary Meter Application
Open the official DWS Forms page and download the Temporary Meter Application.
Login to MAPPS Customer Self Service
Open DWS Temporary Construction Meter, login, select Apply, then Permits, then DWS Request.
Upload application and supporting documents
Upload the completed form and required documentation described in the application.
Follow DWS backflow instructions
An approved reduced pressure backflow preventer may be required before temporary water service can be used.
Wait for DWS review and instructions
DWS will review the request and contact you about requirements, corrections, installation, testing or next steps.
Maui Water Meter Installation and New Water Service Request
For new water service, water meter upgrades, meter relocations and meter removals, Maui MAPPS provides the DWS Water Service Request. The official page says to login and select Apply > Permits > DWS Request.
The DWS Water Service Request page also states that processing time to review the application is approximately 30 days, after which DWS contacts the applicant to discuss application details.
Confirm the property is eligible for service
Before requesting a meter, confirm the property, tax map key, project and water system area are correct.
Open the DWS Water Service Request
Use the official DWS Water Service Request page for new water service, meter upgrades, relocations and removals.
Submit application details in MAPPS
Login, choose Apply, then Permits, then DWS Request, and provide the required project and property details.
Plan for review time
Do not assume immediate approval. The official page lists approximately 30 days for review before DWS contacts the applicant.
Maui Water Meter Upgrade and Meter Sizing in 2026
A water meter upgrade may be needed when a property’s demand changes, a project expands, a building permit requires more capacity, or existing service is not sufficient for proposed use.
Beginning in 2026, Maui DWS has a Water Use Calculation Method page explaining Equivalent Single Dwelling, or ESD, where one ESD equals 300 gallons per day. This helps applicants and reviewers estimate water demand for building permit applications and water service requests.
| Meter task | Official route | Helpful preparation |
|---|---|---|
| New water meter | DWS Water Service Request in MAPPS | TMK, address, project scope, applicant contact and water demand details. |
| Meter upgrade | DWS Water Service Request in MAPPS | Existing meter size, proposed use, ESD calculation and building/project details. |
| Temporary construction meter | DWS Temporary Construction Meter in MAPPS | Temporary Meter Application and backflow documentation. |
| Relocation/removal | DWS Water Service Request in MAPPS | Site plan, reason for request and property details. |
Maui Water Meter Relocation or Removal Request
Meter relocation and removal requests also go through the DWS Water Service Request process in MAPPS. This is not only for new service; the official page specifically includes water meter upgrade, relocation and removal.
Document why the meter must move or be removed
Prepare project plans, property details, construction reason, access concern or service change reason before applying.
Submit a DWS Water Service Request
Open DWS Water Service Request and submit through MAPPS.
Wait for review before scheduling field work
DWS will review the request and contact the applicant to discuss application details and next steps.
Maui Water Meter Reads, Account Usage and Billing Help
For meter read, usage, account and billing questions, call DWS Customer Service/Billing at 808-270-7730. Customers can also use Maui DWS account tools and payment resources to view account and usage information where available.
Meter reads can matter when checking high bills, suspected leaks, final account questions, unusual usage, tenant changes, construction water use or water conservation tracking.
Review your latest bill or account usage
Check service period, usage amount, meter reading dates, current charges and previous balance.
Call Customer Service/Billing for account questions
Call 808-270-7730 for account, bill, meter read or usage questions.
Report possible leaks separately
If the meter read suggests a possible leak or you see a meter leak, main break or hydrant leak, call the 24-hour emergency hotline at 808-270-7633.
Backflow Protection for Temporary Meters and Hydrant-Related Water Use
Temporary construction water can create backflow risk if hoses, tanks, equipment or construction systems are connected without proper protection. The temporary meter application instructions mention an approved reduced pressure backflow preventer requirement for temporary water service.
The official temporary meter form notes that after the reduced pressure backflow preventer is installed, applicants should call 808-270-6132 to schedule a test, and a satisfactory test must be completed before using temporary water service.
Confirm backflow device requirement
Read the Temporary Meter Application carefully and confirm the approved reduced pressure backflow preventer requirement.
Install approved backflow protection
Use qualified personnel and approved equipment so the device is installed correctly for the temporary setup.
Schedule required testing
Call 808-270-6132 to schedule testing after the device is installed, based on the official application instructions.
Maui DWS Emergency Hotline for Meter Leaks, Main Breaks and Hydrant Leaks
DWS FAQ guidance says operations trouble calls for all areas should go to 808-270-7633, 24 hours. This includes emergency water turn-off, water meter leak, water main break, fire hydrant leak, emergency water quality problems and low water pressure.
Call 24-hour hotline
Use for meter leak, main break, hydrant leak, low pressure and emergency water quality issues.
808-270-7633Stay safe
Do not enter floodwater, unstable ground, traffic zones or areas near electrical hazards.
Safety firstCall the emergency hotline
Call 808-270-7633 for urgent DWS operations trouble calls.
Give exact location details
Provide island area, street address, cross street, meter or hydrant location, visible problem, start time and callback number.
Protect people and property
Keep people away from open meter boxes, hydrant leaks, flowing water, eroded areas and traffic hazards.
2026 Maui Water Use Calculation Method and Meter Planning
Maui DWS introduced a Water Use Calculation Method page for 2026 planning. It uses Equivalent Single Dwelling, or ESD, to measure estimated water demand. One ESD equals 300 gallons per day.
This can matter for applicants requesting new or additional water service, meter upgrades, building permits or development-related water demand review.
Check whether your project needs water demand review
Building permit applications, additional fixtures, new development or changed property use may require water demand documentation.
Use the official water use checklist
Open the Water Use Calculation Method page before submitting a water service or meter request.
Match meter request to real demand
Use the correct documentation so DWS can review the request based on estimated water use, meter size and system capacity.
Checklist Before Applying for Maui Hydrant, Temporary Meter or Meter Work
Before starting a MAPPS request, collect the basic project and property details. Missing information can delay review, especially for temporary construction meters and meter changes.
| Check | What to prepare |
|---|---|
| Property details | TMK, service address, project location, district and applicant information. |
| Request type | Temporary meter, new service, meter upgrade, meter relocation, meter removal or meter read/account help. |
| Project details | Construction scope, requested water use, time period, site plan and contact person. |
| Backflow | Reduced pressure backflow preventer information and testing plan if required. |
| MAPPS access | Customer Self Service login and PDF copies of completed forms. |
| Emergency condition | If it is a leak, main break or hydrant leak, call 808-270-7633 instead of only submitting paperwork. |
What to Say When Contacting Maui DWS About Hydrants, Meters or Reads
Clear wording helps DWS route your request to billing, MAPPS permitting, engineering, meter service, field operations or emergency response.
| Situation | Example wording | Best route |
|---|---|---|
| Temporary construction meter | “I need temporary water service for a construction project and need to submit the Temporary Meter Application.” | MAPPS DWS Temporary Construction Meter |
| New meter or upgrade | “I need a new water service request / meter upgrade for this property.” | MAPPS DWS Water Service Request |
| Meter read or billing | “I have a question about my water account usage or meter reading.” | Customer Service/Billing 808-270-7730 |
| Hydrant leak | “There is a leaking fire hydrant at this location.” | 24-hour emergency 808-270-7633 |
| Backflow test | “The RPBP is installed and I need to schedule the required test.” | Backflow test number 808-270-6132 |
Maui Department of Water Supply Office Map and Visit Guidance
The DWS main office is listed at 200 S. High Street, Kalana O Maui Building, 5th Floor, Wailuku, HI 96793. The Fiscal Division / billing location is listed at 1888 Wili Pa Loop, Wailuku, HI 96793.
For billing questions, call 808-270-7730 before visiting. For hydrant leaks, meter leaks, main breaks or urgent operations trouble calls, call the 24-hour emergency hotline at 808-270-7633.
County of Maui Department of Water Supply Main Office
Use this map for main DWS office location reference. Billing/payment service may use the Fiscal Division location.
Official Maui Water Department Hydrant, Meter and Reads Links
Use these official County of Maui resources for hydrant rules, temporary meters, meter installation, water service requests, forms, billing, usage, emergency contacts and water use calculations.
Department of Water Supply
Main Maui DWS page with office details, quick access links and department information.
Open DWSDWS Contact Information
Customer Service/Billing, Administration, laboratory, emergency hotline and other phone numbers.
Open Contact InfoDWS Forms
Temporary Meter Application and other Department of Water Supply forms.
Open FormsTemporary Construction Meter
MAPPS process for temporary construction meter requests and application upload.
Open Temporary MeterWater Service Request
New service, meter upgrade, meter relocation and meter removal request route.
Open Service RequestWater Services Rules
DWS water service rules including fire hydrant use and damage provisions.
Open Water ServicesWater Use Calculation
2026 water demand, ESD method, meter planning and submittal checklist resources.
Open Water Use MethodOnline Bill Payments
County water/sewer payment options, online payment and automatic bill payment resources.
Open Bill PaymentsEmergency Hotline
Use phone contact for urgent leaks, main breaks, hydrant leaks, low pressure or water quality emergencies.
Call 808-270-7633Maui Water Department Hydrant, Meter Install and Reads FAQs
What is the Maui Department of Water Supply phone number?
DWS Customer Service/Billing is 808-270-7730, Administration is 808-270-7816, and the DWS 24-hour emergency hotline is 808-270-7633.
How do I request a temporary construction meter in Maui County?
Use the official DWS Temporary Construction Meter process in MAPPS. Download and complete the Temporary Meter Application from the DWS Forms page, then upload the required documents during the online request.
How do I request a new Maui water meter or meter upgrade?
Use the official DWS Water Service Request in MAPPS for new water service, meter upgrade, meter relocation or meter removal.
Can I use a Maui fire hydrant without approval?
No. Fire hydrant use is regulated by DWS rules. Construction or temporary water use should follow the official temporary meter and backflow protection process.
What number do I call for a Maui fire hydrant leak?
Call the DWS 24-hour emergency hotline at 808-270-7633 for fire hydrant leaks, water meter leaks, main breaks, emergency water turn-off, low pressure or emergency water quality issues.
How long does Maui DWS take to review a water service request?
The official DWS Water Service Request page states that processing time to review the application is approximately 30 days. DWS then contacts the applicant to discuss details.
What is required before using a temporary construction meter?
The Temporary Meter Application instructions mention an approved reduced pressure backflow preventer and required testing before temporary water service is used.
Who do I call for Maui meter reads or account usage questions?
For meter read, account usage, billing or customer account questions, call DWS Customer Service/Billing at 808-270-7730.
Where is Maui DWS Customer Service/Billing located?
The Fiscal Division / customer service payment location is listed at 1888 Wili Pa Loop, Wailuku, HI 96793.
Where is the Maui Department of Water Supply main office?
The DWS main office is listed at 200 S. High Street, Kalana O Maui Building, 5th Floor, Wailuku, HI 96793.
What is ESD in Maui DWS water use calculation?
ESD means Equivalent Single Dwelling. Maui DWS explains that one ESD equals 300 gallons of water per day for water demand calculation.
Is this guide for Maui County DWS or Hawaii County DWS?
This guide is for the County of Maui Department of Water Supply. Hawaii County Department of Water Supply is a different agency with different forms, contacts and service areas.
Best Way to Handle Maui Hydrant Use, Meter Install and Reads in 2026
For temporary construction water or hydrant-related construction use, start with the official DWS Temporary Construction Meter process in MAPPS and the Temporary Meter Application. For new meters, upgrades, relocations or removals, use the DWS Water Service Request in MAPPS.
For billing, account usage and meter read questions, call 808-270-7730. For meter leaks, main breaks, hydrant leaks, emergency water turn-off, low pressure or emergency water quality concerns, call the DWS 24-hour emergency hotline at 808-270-7633. Always verify final forms, rules and requirements on official Maui County DWS pages before submitting work or connecting equipment.
Editorial note: This guide is informational and helps Maui County water customers, contractors and property owners find official DWS routes faster. Hydrant use rules, temporary meter requirements, backflow testing, MAPPS processes, meter sizing, ESD calculation, billing contacts and emergency routing can change, so always confirm final details directly on official mauicounty.gov and official Maui MAPPS pages before taking action.