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Zip+4 and 10-digit account number, as printed on your bill, is required to pay bill using portal. Click here to pay.

Customer Service

We’re here to help with new accounts, billing inquiries, or if you need any additional assistance.

Water Notices Map

For emergencies, call (808) 961-8790 – Call 24 hours a day, all districts. Broken mains, low water pressure, leaks.  

Lead and Copper Rule Revision
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DEPARTMENT OF WATER SUPPLY UPDATE

DEPARTMENT OF WATER SUPPLY UPDATE

By / August 20, 2026
DEPARTMENT OF WATER SUPPLY UPDATE AFFECTED AREA: DEPARTMENT OF WATER SUPPLY CUSTOMERS IN KALAPANA, PAPAIKOU, PAAUILO, HONOKAA, HAWI, MAKAPALA, KALOKO...
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WAIOHINU – NAALEHU (Public Water System #108) customers – Precautionary Boil Water notice

WAIOHINU – NAALEHU (Public Water System #108) customers – Precautionary Boil Water notice

By / August 20, 2026
Department of Water Supply’s WAIOHINU - NAALEHU (Public Water System #108) customers – Precautionary Boil Water notice The County of...
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Water service could be interrupted by wind-related power outages

Water service could be interrupted by wind-related power outages

By / August 13, 2026
Prepare for Drinking Water Needs Ahead of Approaching Storm The Department of Water Supply (DWS), County of Hawai‘i, advises water...
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WATER CONSERVATION TIPS

There's only a limited supply of water on Earth, but the demand is increasing. Here's how you can do your part at home to conserve water, our most precious resource.
faucet

General Indoor

dishes

Kitchen

showerhead

Bathroom

washing machine

Laundry

dog drinking water

General Outdoor

garden hose

Lawn

watering plants

Landscape

pool water

Pool

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The Department of Water Supply is a semi-autonomous agency of the County of Hawai‘i that is governed by the Water Board. Founded in 1949, its primary function is to provide domestic water service through its 23 water systems scattered throughout the Big Island. The Department continually strives to provide safe, dependable, high quality, potable water at a reasonable cost.