Monroe County, Michigan — public water systems

How does Monroe County compare with other Michigan counties?

Monroe County has the 53rd-most active public water systems among the 131 counties listed for active Michigan systems in EPA records; among the 88 with 3 or more systems, the median has 92. Its systems report 141,308 people served in total, the 12th-largest county figure in the state and 1.6% of the statewide total. The average system here reports serving 1,703 people, about twice the Michigan average of 847. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.

Where does Monroe County's drinking water come from?

By primary water source, Monroe County's active systems draw on groundwater (74, 89%), purchased surface water (6, 7.2%), surface water (2, 2.4%) and groundwater under influence of surface water (1, 1.2%). Overall, 90% rely mainly on groundwater (including purchased groundwater) and 9.6% on surface water, compared with 97% and 3.1% across Michigan. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Monroe, draws primarily on surface water.

What kinds of water systems operate in Monroe County?

Monroe County's active systems break down as 11 community systems (13%), 5 non-transient non-community systems (6%) and 67 transient non-community systems (81%). A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as private (88%), local government (11%) and state government (1.2%).