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 34,700 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%.

The Department of Water Supply (DWS) also declared a drought watch for Upcountry Maui. We are asking our Upcountry customers to reduce water consumption by 5%. Customers with agricultural rates are exempt from the request. The requested reduction is based on the past two years' billing records. For easy ways to use less water (and save money), see our tips on Water Conservation.