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Kauaʻi Department of Water Home Page

Safe and Affordable Water Services for Kauaʻi

The Kauaʻi County Department of Water is dedicated to managing our water resources and providing excellent customer service to the people of Kauaʻi.

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To our valued DOW customers,

The impact of Hurricane Lowell has been significant, and we hope you and your loved ones are safe.  During this large-scale recovery effort, our focus is to ensure we provide our communities with safe drinking water and get our systems operational as quickly and as safely as we can.

Our crews are working around to the clock with limited staff support and resources to address the various emergency water infrastructure needs resulting from extensive storm damage and large-scale power outages across the island.  Our office remains closed for business through Friday, September 11, 2026.  However, should you need to contact us to report any outages, breaks, or other DOW service emergencies, please contact our dispatch line at (808) 245-5400 Option 1, Monday-Friday (excluding holidays) between the hours of 7:45 a.m. and 4:30 p.m. For after-hours reporting, please contact KPD non-emergency dispatch at (808) 755-8516 or (808) 652-7837.  For updates and notices, please continue to visit our webpage.

We appreciate your continued patience and understanding through this recovery process.

Mahalo!

Setting Up and Understanding Your Residential or Commercial Water Services

Do You Want to Set up or Transfer New Water Service for Your Home or Office?

Understand the process required, service rates and charges, and learn how to sign up for a new water service with ease.

Set Up a New Water Service

Do You Have Questions About Your Water Bill?

Learn how to read your water bill and understand how your service is being charged.

How to Read Your Bill

What Are My Payment Options?

Learn about all the ways you can pay for your bill.

Payment Options

News

URGENT REMINDER: Water conservation in effect for Kauaʻi

September 12, 2026

LĪHUʻE – The Department of Kauai (DOW) reminds its customers of the island wide water conservation notice. Water pumps are...

Boil Water Notice has been cancelled for Wainiha-Hāʻena

September 11, 2026

Date: September 11, 2026 To: Consumers of the Wainiha-Hāʻena Water SystemBoil Water Notice cancelled for Wainiha-HāʻenaLĪHUʻE – The Department of...

DOW offices closed on Friday, September 11

September 11, 2026

We are CLOSED today. In compliance with Governor Josh Green’s directive, DOW offices will remain CLOSED on Friday, September 11....

Providing Water for Kauaʻi Residents

Explore some key statistics that reflect the services we provide across the island of Kauaʻi.

24,468
Water service connections
419.9 miles
Length of mainline pipes
13.69 mgd
Average daily water demand (in millions of gallons)
2.2
Average number of hydrants hit by cars per month