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 www.mauirecovers.org 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 www.MauiNuiStrong.info 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. 2/23/2024: Water service outage in Nahiku on Nahiku Road from 3 p.m. to 9 p.m.

    DWS reports a water service outage in Nahiku on Nahiku Road from 3 p.m. to 9 p.m. due to a main line repair. Residents and visitors of Nahiku are asked to conserve water to extend available water supply while repairs are being conducted.
  2. 2/16/2024: Unsafe Water Advisory Amended in Lahaina to remove areas L4-A and L4E.

    The DWS amended the Unsafe Water Advisory for Lahaina to remove areas L-4A and L-4E. Community members can search an address using the interactive Water Advisory Map at www.mauirecovers.org/utilities to confirm if their address is affected. Read on...
  3. Latest Long-Term Monitoring Program samples posted for samples taken 2/07 and 2/08/2024..

    DWS continues to monitor areas formerly under the Unsafe Water Advisories (UWA) through its Long-Term Monitoring Program (LTMP). The Water Quality Lab conducts water quality sampling and testing in these areas as well as those areas still under the UWA. Read on...
  4. Hawai'i Home Water Assistance Program (H-HWAP) has been extended through March 2024

    Assistance is now available to qualified Maui County water account holders through the Hawai'i Home Water Assistance Program (H-HWAP) being administered by Maui Economic Opportunity. Read on...
  5. 1-19-2024 DWS Amends Unsafe Water Advisory to remove area L-4D in Lahaina

    DWS has amended the Unsafe Water Advisory to remove area L-4D in Lahaina effective January 19, 2024. Community members can search an address using the interactive Water Advisory Map at www.mauirecovers.org/utilities. Read on...
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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:
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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           CommercialPayment by Phone
Online Bill PayCommercial Online Bill PaymentPay by Phone 855-385-4836
     855-385-4836

Commercial Payments Residential Payment