Skip Navigation
MI.gov
DEQ - Department of Environmental Quality | DEQ Department of Environmental Quality | DEQ
Department of Environmental Quality | DEQ
Email this Page
Share this Link on Facebook
Tweet this page on Twitter!
Drinking Water
  • DEQ Drinking Water Programs

    National Drinking Water Week is May 4 - 10, 2014.

    The DEQ has primary enforcement authority in Michigan for the Federal Safe Drinking Water Act under the legislative authority of the Michigan Safe Drinking Water Act. As such, the division has regulatory oversight for all public water supplies, including approximately 1,500 community water supplies and 11,000 noncommunity water supplies. In addition the program regulates drinking water well drilling. Michigan has more households (1.12 million) served by private wells than any other state, with approximately 25,000 domestic wells drilled per year. The DEQ also investigates drinking water well contamination, and oversees remedial activities at sites of groundwater contamination affecting drinking water wells.

Plugging abandoned water wells protects aquifers that supply drinking water to nearly one-half of Michigan's citizens.
Community Water Supply oversees the primary EPA program that sets forth minimum standards for safe drinking water as well as administering the requirements of Michigan's Safe Drinking Water Act. This program includes approximately 1,480 communities water supply. The program's primary function is regulatory oversight of community public water supplies.
The Contamination Investigation Unit assists local health departments in conducting drinking water quality investigations in areas of known or suspected environmental contamination.
A Noncommunity Water Supply is a water system that provides water for drinking or potable purposes to 25 or more persons at least 60 days per year or has 15 or more service connections.
The Michigan Department of Environmental Quality (MDEQ) is completing a Source Water Assessment Program as required by the 1996 reauthorization of the federal Safe Drinking Water Act (SDWA).
This program assists local communities utilizing groundwater for their municipal drinking water supply systems in protecting their water source. A WHPP minimizes the potential for contamination by identifying and protecting the area that contributes water to municipal water supply wells and avoids costly groundwater clean-ups.
Information for well owners and contractors regulated under the Michigan Water Well Construction and Pump Installation Code.