Annual Water Quality Report for County of Maui water systems
In 1998, the U.S. Environmental Protection Agency (EPA) passed new regulations requiring an annual report on the quality of drinking water be provided to customers by their community water systems. This requirement is known as the Consumer Confidence Report (CCR) rule.

The Water Quality Report by the Maui Department of Water Supply (DWS) describes the quality of your drinking water and where it comes from. This Report is a review of testing conducted and compiled in 2011 for reporting by July 2012.  The DWS tested for more than 100 substances in the water, including bacteria, pesticides and herbicides, asbestos, lead, copper, petroleum products, and by-products of industrial and water treatment processes.  Find out where your water comes from, what's in it, and how it compares to US EPA and Hawaii health standards.  

The Maui Department of Water Supply has been treating and testing the quality of its water since the Department was organized in 1949. DWS runs thousands of tests a year to look for possible contaminants. These tests ensure the safety of your water.  For a full list of substances tested for and results, call the DWS Laboratory at (808) 270-7550.

Contact Information

Organization	Phone Number
DWS Laboratory	(808) 270-7550
DWS Administration (Board)	(808) 270-7816
DWS Administration	(808) 270-8046
Hawaii State Dept. of Health	(808) 984-2400 Ext 64258
Environmental Protection Agency	(800) 426-4791

Check out our glossary of water-related terms. Here you will find a listing, in alphabetical order, of the Department's most commonly used terms and their definitions.