Tap Truth EPA drinking water records, in plain English

County drinking water records

Frederick County, MD drinking water systems

31 community water systems serve Frederick County, MD, reporting 190,730 people served in all. A system that also serves other counties counts all of its customers here.

6 of them (19%) had at least one health-based violation in the last 10 years. 3 systems still have one unresolved.

16 rely mainly on groundwater and 15 on surface water, counting water bought from other systems.

Their lead service line inventories list 23 lead lines, 216 galvanized lines that must be replaced and 16,530 lines of unknown material.

Community water systems
31
People served, sum of each system's own figure
190,730
Systems with a health-based violation, last 10 years
6
Systems with one unresolved
3
Lead service lines in inventories
23

Water systems serving Frederick County

31 systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
New Design - Frederick County Ballenger Creek, Linganore and 7 more 74,911 Surface water 0 0 0
City of Frederick Frederick 54,000 Surface water 0 0 20
Town of Mount Airy Mount Airy 9,890 Groundwater 0 0 1
Town of Walkersville Walkersville 8,440 Groundwater under direct influence 0 0 0
Fort Detrick Frederick 7,900 Surface water 3 0 0
City of Brunswick Brunswick 7,312 Surface water 0 0 0
Town of Thurmont Thurmont 6,200 Groundwater under direct influence 0 0 0
Town of Middletown Middletown 4,288 Groundwater 0 0 0
Town of Emmitsburg Emmitsburg 2,921 Surface water 0 0 2
Fountaindale South Braddock Heights 2,610 Groundwater under direct influence 0 0 0
Mount Saint Marys University Outside cities and towns 1,900 Groundwater 0 0 0
Knolls of Windsor Green Valley 1,553 Groundwater under direct influence 0 0 0
Town of Myersville Myersville 1,516 Surface water 0 0 0
Waterside Outside cities and towns 1,509 Purchased surface water 0 0 0
Sam Hill Estates Green Valley 1,036 Groundwater 0 0 0
Cambridge Farms Jefferson 953 Groundwater 0 0 0
Cloverhill 3 - Consecutive to MD0100015 Outside cities and towns 888 Purchased surface water 3 0 0
Town of Woodsboro Woodsboro 846 Groundwater 0 0 0
Copperfield Jefferson 338 Groundwater 0 0 0
Country Meadows of Frederick Ballenger Creek 295 Purchased surface water 0 0 0
White Rock Outside cities and towns 256 Groundwater 0 0 0
Rosemont Distribution System Rosemont 237 Purchased surface water 0 0 0
Bradford Estates Green Valley 178 Groundwater 0 0 0
Concord Estates Mobile Home Park Outside cities and towns 150 Groundwater 1 1 0
Libertytown East Libertytown 140 Groundwater 0 0 0
Tranquility at Fredericktowne Frederick 105 Purchased surface water 1 1 0
Libertytown Apartments Libertytown 97 Groundwater 0 0 0
Polings Mobile Home Park Braddock Heights 80 Groundwater 0 0 0
Gilberts Mobile Home Park Ballenger Creek 75 Groundwater 1 0 0
Spring View Mobile Home Park Ballenger Creek 70 Groundwater 0 0 0
Amelano Manor Outside cities and towns 36 Groundwater 1 1 0

Cities and towns in Frederick County

22 places

Back to Maryland

Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations