Department of Water Supply

Maui County Emergency Rental Assistance Program (MERA)

Assistance is available to qualified Maui County water account holders who have fallen behind in their bills due to the financial impacts of Covid-19. The Maui County Emergency Rental Assistance Program is now accepting applications. To learn more about this program please go to:
Don't Waste a Drop Logo

Maui County is struggling with one of the worst ongoing drought crises in over a decade. As a result, there has been less water to collect, treat and deliver to your homes. Water use restrictions are likely to continue as the Department of Water Supply (DWS) implores everyone to conserve water.

As a reminder to conserve water during the summer months, DWS has created a water conservation awareness campaign called, “ Don’t Waste a Drop.

Please get involved and visit the DWS Water Conservation Tools to learn more about how you can save more water and money! 

Free fixtures are available!

Our Mission

The Department of Water Supply is an agency of the County of Maui. Our mission is to provide clean water efficiently. We provide water to approximately 36,400 services on Maui and Molokai. The water we provide meets all state and federal water quality standards. Take a look around our site to learn more. The Department needs your help! Please conserve water. For easy ways to use less water (and save money), see our tips on Water Conservation.

What's New:

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Department of Water Supply announces temporary customer service changes

On June 22, 2020, the Kalana O Maui building and One Main Plaza will be open to the public for our customers. The Department of Water Supply will still be taking precautions to ensure the health and safety of our customers as well as our employees.

DWS Divisions are not accepting any walk-in appointments at this time and encourage reaching out to our divisions via phone or email.

You can pay your water bill at our customer service window on the 5th floor. DWS Divisional contact information is available on our web site.

If you do visit us in person, we ask all visitors for their continued cooperation and to please:

- wear a face mask or other cloth face covering
- maintain a six-foot distance apart from others, and
- use hand sanitizers that have been made available

Thank you and stay safe!

    West Maui residents and businesses are being asked to voluntarily conserve water while the Mahinahina Water Treatment Facility undergoes upgrades from May 31 to Aug. 6, 2021. Read on...

    The County of Maui Department of Water Supply will begin mandatory Stage 1 water restrictions for its domestic water system serving residents of the Upcountry Maui service area beginning Friday, July 2, 2021. Read on...
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DWS  Small Meter Replacement Project 

In June 2020 the Department of Water Supply began its Small Meter Replacement project aimed at upgrading aging water meters within the County water system. The project, which is expected to last for four years, will replace an estimated 26,000 water meters that are 2” or less in size. Professional Meters, Inc. (PMI) has been hired by the department to install the meters. 

View your Water Bill Information

Customers can view their water bills, access account information and request electronic bill presentment online by creating an account here:

Telephone & Online Payment

You may pay your water bill on-line by using the links below or by telephone at the toll free number posted below. A convenience fee is charged at the time payment is processed.
* Please have available your 10 digit water account number to make a payment.

Residential Commercial Payment by Phone
Online Bill Pay Commercial Online Bill Payment Pay by Phone 855-385-4836

Commercial Payments Residential Payment