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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.

Learn More About Us DOW Public Meetings (Sept. 2025)

DOW Public Meetings - Sept. 2025

Join us! Come and learn more about our water system, engage in dialogue about the priorities and impacts such as growth, protection against climate impacts, and realities of an aging infrastructure.

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

REMINDER:  DOW announces community meetings in Waimea and Līhuʻe  to plan Kauaʻi’s water future 

September 29, 2025

LĪHUʻE — The Kauaʻi Department of Water (DOW) reminds residents to join them at any of their remaining community meetings to...

DOW makes a splash with water festival for Kauaʻiʻs fifth graders

September 24, 2025

LĪHUE - The Department of Water (DOW) hosted the 20th annual Make a Splash with Project WET water education festival...

Kūhiō Highway (Hardy-Oxford) Waterline Project on Sept. 22

September 15, 2025

LĪHUʻE - The Department of Water (DOW) will hold a public meeting regarding the Kūhiō Highway (Hardy-Oxford) Waterline Project. The...

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