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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

Meter and Transponder Replacement Project

The Department of Water is actively replacing meter transponder units as part of the Meter and Transponder Replacement Project. We’re taking steps to ensure accurate readings of your actual water consumption.

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

DOW to observe World Toilet Day with a toilet giveaway

November 13, 2025

LĪHUʻE – The Kauaʻi Department of Water (DOW) is pleased to announce the observance of World Toilet Day on November...

KAPA'A - Haleilio Road, Kaulana Road, and Kihei Road

November 10, 2025

7 p.m. (UPDATE) – Water service is being restored. Please allow 30 minutes for restoration. DOW crews are currently flushing...

DOW invites public to discuss the Hanalei Water Line Improvements Project on November 19

November 6, 2025

DOW invites public to discuss the Hanalei Water Line Improvements Project on November 19LĪHUʻE – The Department of Water (DOW)...

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