Department of Water Supply

Unsafe Water Advisory Interactive Map Unsafe Water Advisory Interactive Map Opens in new window

Maui Recovers Opens in new windowThe County of Maui’s website provides important updates on recovery efforts, including re-entry to impacted areas, safety information for those returning to their property, fire debris removal, maps and data, water and wastewater, recovery phases and information on financial and housing assistance.

Maui Nui Strong Opens in new window The County of Maui’s website provides updated information on relief efforts for those impacted by the Maui wildfire disaster and for those who want to lend their support. It also features important links and resources for residents, businesses and visitors.

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:

  1. Amended Upper Kula Unsafe Water Advisory 9-12-2023

    Effective September 12, 2023, the Department of Water Supply announces that the Unsafe Water Advisory for Upper Kula has been amended to remove Zone 1 from the affected area. To determine if your address is in a specific zone, please refer to the map. Read on...
  2. Location of potable water tankers in Upper Kula and Lahaina as of 9/27/2023

    Upper Kula: Copp Rd, Kula Lodge Lahaina: Lahaina Gateway Kahoma Village and Lahaina Baseyard parking area. For complete list continue. Read on...
  3. Updated lab results from 9/11/2023 and 9/12/2023 samples now posted.

    Updated lab results have been posted for Lahaina and Upper Kula water systems. Read on...
  4. Unsafe Water Advisory map

    An interactive map is now available for the public to view. The interactive map has been broken down into five zones. Zone 1 is now in green. If your address is in the green area, the Unsafe Water Advisory no longer applies. Map
  5. Lahaina and Upper Kula Unsafe Water Advisories

    The Unsafe Water Advisories are still in effect. DWS is working closely with the Hawaii State Department of Health and EPA to return the water systems to service. Scan QR code in link, to use DWS' interactive map and see additional resources. Additional Resources
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Don't Waste a Drop Logo

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

Free fixtures are available!

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