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 36,400 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 easy ways to use less water (and save money), see our tips on Water Conservation.

What's New:

• The Department of Water Supply is now accepting entries for the: 
  • 4th Annual Source Water Protection Video Contest  Eligible participants: Participants must be enrolled and in good standing at a County of Maui public or private high school or home school (Grades 9‐12).
  • 11th Annual Water Conservation Poster Contest  Eligible participants: Participants must be enrolled and in good standing at a County of Maui public or private high school or home school (Grades K‐8).
  • Fiscal Year 2019 Annual Report & Audit
• Press Release - Renewed Call for Conservation in West Maui effective November 7, 2019
• Press Release - Kaunakakai/Kawela on Moloka'i customers asked to conserve water effective October 8, 2019
• Press Release - Water Conservation Notice for Waikapu, Kehalani Mauka and Waluku Heights effective July 1, 2019
• Press Release - Water Conservation Notice for Waikapu, Kehalani Mauka and Wailuku Heights effective June 21, 2019 
• Press Release - Stage 1 Water Shortage Declared for Upcountry Maui effective May 24, 2019
• Fiscal Year 2018 Annual Report & Audit
• Rain Barrel Catchment Program Giveaway Opens a New Window.  
• 2019 Water Quality Report now available
• Ultra-High Efficiency Toilet (UHET) Replacement Programpens a New Window
• Maui Island Water Use and Development Plan
• Road Signs - Public Water Source Protection Area - What do these signs mean? Opens a New Window.

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