Carroll County, Maryland — public water systems

How does Carroll County compare with other Maryland counties?

Carroll County has the 5th-most active public water systems among the 60 counties listed for active Maryland systems in EPA records; among the 27 with 3 or more systems, the median has 78. Its systems report 128,551 people served in total, the 7th-largest county figure in the state and 2.2% of the statewide total. The average system here reports serving 618 people, well below the Maryland average of 1,947. 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 Carroll County's drinking water come from?

By primary water source, Carroll County's active systems draw on groundwater (200, 96%), surface water (3, 1.4%), groundwater under influence of surface water (3, 1.4%) and purchased surface water (1, 0.5%). Overall, 98% rely mainly on groundwater (including purchased groundwater) and 1.9% on surface water, compared with 97% and 2.6% across Maryland. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, City of Westminster, draws primarily on surface water.

What kinds of water systems operate in Carroll County?

Carroll County's active systems break down as 23 community systems (11%), 28 non-transient non-community systems (13%) and 157 transient non-community systems (75%). 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 (89%), local government (9.6%) and state government (1.4%).