The Department of Water Supply is an agency of the County of Maui. Our mission is to provide clean water efficiently. We provide water to approximately 35,500 services on Maui and Molokai. The water we provide meets all state and federal water quality standards. Take a look around our site to learn more.

The Department needs your help! Please conserve water. For Central and South Maui customers, we have requested all customers reduce consumption by 10%.

On June 25, 2009, the Department of Water Supply (DWS) declared a drought watch for Upcountry Maui. Customers are requested to reduce water consumption by 5%.  For easy ways to use less water (and save money), see our tips on Water Conservation.