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:

Department of Water Supply reopens payment window on the 5th Floor on Monday, October 11, 2021

The Department of Water Supply will be reopening the payment window located on the 5th Floor on October 11, 2021.

All other payment options are still available. In addition to mail in payments, drop boxes are available at the front of the County building located at 200 South High Street in Wailuku; County of Maui Service Center located at 110 Alaihi Street in Kahului; or at the Hana and Lahaina Department of Water Supply baseyards.

Payments can also be made at the Real Property Tax Office or at the Department of Motor Vehicles window. Electronic payments can be made via our website at or by phone at 855-385-4836 (tel: 855-385-4836) for a convenience fee of $2.95.
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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    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