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Aloha from the Kauaʻi Department of Water.

We are dedicated to providing safe, affordable, sufficient water service through wise management of our resources and with excellent customer service for the people of Kauaʻi.


Here are the most recent customer service notices:


View Frequently Asked Billing Questions during the Meter and Transponder Replacement Project

Upcoming Water Service Line Inspections in Your Neighborhood


Main lobby open for Billing & Account Services:

Account services and walk-in bill payments are now accepted at our service windows located in the main lobby. Payments by check will continue to be accepted in the payment drop box. For Online Bill Pay, click here.
Documents Drop off: To drop off service documents, please use the drop box located in the parking lot. Applications and service forms are available on the “
Forms & Applications” tab on our website.


Business Hours (Monday thru Friday, closed on holidays):
Business by phone or appointment: 7:45 a.m. – 4:30 p.m.
Main Lobby Hours (Billing Services) 8:00 a.m. – 4:00 p.m.


For additional services: Please call 245-5400 to schedule an appointment. Customers who arrive without an appointment will be kindly asked to make an appointment.


For the latest service announcements from the Department of Water and the County of Kauaʻi,  click here

Customer Account Portal (CAP)


July 2024 Meetings

Regular Board Meeting
Thursday, July 18, 2024, 9:30 am

For official meeting posting and agenda packet, please visit:

A New Look

Click Here to View a Sample of the New bill

Click Here on How to Read Your New Bill
DOW Annual Report 2023

Press Releases
Kauaʻi Water Use and Development Plan Update
Click Here for More Information



Water Emergency Preparedness

Click Here to learn more about how to prepare your household water supply for a natural disaster.

2019 CIP Project List

Progress Report on Water Plan 2020

Understanding Your Water Meter
Click Here to Find out How

Introduction / Table of Contents

100 Planning
200 Materials
300 Construction
400 Approved Materials List and Standards Details


2005 Amendments

2008 Amendments

Activities for the kids, including:
puzzles, trivia, coloring book pages, water cycle and more!
Access to Water Service Applications and Engineering Forms.

If you have time, please fill out our Feedback and Survey

Get the latest tips for indoor and outdoor conservation.

Read about Xeriscape and it can save you water.

Look for our new Free Low Flow Fixtures Offer.