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 MeetingsPublic Hearings
September 1, 2026
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 ServiceDo 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 BillNews
DOW severe weather preparation and awareness
September 5, 2026
LĪHUʻE – The Department of Water (DOW) reminds its customers to prepare for possible water service impacts during severe weather....
UPDATE: Emergency one-lane southbound merger taper on Kuhio Highway Sept. 1
September 1, 2026
1:45 p.m. All lanes are now reopened. Mahalo for your patience! -- KAPAʻA - The Department of Water (DOW) is...
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