About Us
Oʻahu Water – Safe. Affordable. Dependable.
About Us
The Board of Water Supply (BWS) manages Oʻahu's municipal water resources and distribution system. The BWS provides residents with safe and dependable water service at a reasonable cost. Monies collected from water sales finance its operations and projects.
As a semi-autonomous agency, the BWS is governed by a seven-member Board of Directors. Five members are appointed by the Mayor and approved by the City Council. The remaining two directors are the Director of the Hawaiʻi State Department of Transportation (DOT) and the Chief Engineer of the City Department of Facility Maintenance (DFM).

"Uwē ka lani ola ka honua"
When the heavens weep, the earth lives
Commonly Asked Topics
BWS Jobs 
Contact Us 
Department Financial Statements 
Frequently Asked Questions 
Location & Parking 
Requests for BWS Records 
Rules and Regulations 
Updated: 02/26/2026