Department of Water

DOW Office

Aloha from the Kaua`i Department of Water!

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

For the latest water service updates and announcements, follow @KauaiDOW on Facebook!

Our friendly staff are available to assist you with your water service needs throughout the duration of your service, from applying for water service, setting up convenient Automatic Bill Pay or assisting with questions on your water bill.  Billing Services are available for in-person service from 8 a.m. to 4 p.m. or by phone at 808-245-5442.  All other services by phone or appointment are available from 7:45 a.m. to 4:30 p.m., Monday to Friday, closed on holidays.

We believe that keeping the public informed about the quality of their drinking water is an important part of our services.  Therefore, in compliance with the Safe Drinking Water Act, the department produces and provides its customers with an annual water quality report.  The Department of Water conducts water sampling on a continuous schedule to ensure your drinking water is of the highest quality and that it meets state and federal standards for clean, safe drinking water. 

The Department of Water is committed to providing the people of Kaua`i with dependable water service now and into the future.  Our personnel work hard to operate and maintain more than 50 deep well pumping stations, 20 booster stations along with its associated facilities and equipment, 58 storage tanks, 75 control valve stations and 440+ miles of pipeline to service over 24,000 consumer service connections and meters island wide.  To build resiliency within our systems and ensure that our commitment is met efficiently, the department has developed a comprehensive long-range plan to identify and address the need to upgrade aging infrastructure, conduct system improvements, quantify future demands and available source options and balance the needs and costs of providing water to residential, commercial and agricultural users.

The Department of Water is a semi-autonomous agency of the County and is governed by the Board of Water Supply.  The department operates and maintains nine separate, unconnected water systems with revenues generated through water service accounts and does not receive subsidy from the County General Fund. 

For more information, please visit the Department of Water website at


Department Head

Joseph Tait

Joe Tait

Manager and Chief Engineer