Tap Truth EPA drinking water records, in plain English

County drinking water records

St. Mary's County, MD drinking water systems

38 community water systems serve St. Mary's County, MD, reporting 91,164 people served in all.

6 of them (16%) had at least one health-based violation in the last 10 years. None of those systems has one still unresolved.

38 rely mainly on groundwater, counting water bought from other systems.

Their lead service line inventories list 0 lead lines, 32 galvanized lines that must be replaced and 444 lines of unknown material.

Community water systems
38
People served, sum of each system's own figure
91,164
Systems with a health-based violation, last 10 years
6
Systems with one unresolved
0
Lead service lines in inventories
0

Water systems serving St. Mary's County

38 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
Lexington Park California, Lexington Park and 1 more 43,030 Groundwater 0 0 0
Patuxent Naval Air Station (Navfac-Wash) Outside cities and towns 22,000 Groundwater 0 0 0
Town of Leonardtown Leonardtown 5,000 Groundwater 0 0 0
Country Lakes Outside cities and towns 3,016 Groundwater 0 0 0
Cedar Cove Lexington Park 2,728 Groundwater 0 0 0
Saint Marys College Outside cities and towns 2,200 Groundwater 1 0 0
Wicomico Shores Outside cities and towns 1,262 Groundwater 0 0 0
Greenbrier Lexington Park 1,161 Groundwater 0 0 0
Breton Bay Outside cities and towns 1,012 Groundwater 0 0 0
Lord Calvert Trailer Park Outside cities and towns 892 Groundwater 1 0 0
Hunting Quarters Callaway 715 Groundwater 0 0 0
Rolling Acres Golden Beach 699 Groundwater 0 0 0
Piney Point Piney Point 672 Groundwater 0 0 0
St. Clements Shores Outside cities and towns 620 Groundwater 0 0 0
Charlotte Hall Outside cities and towns 615 Groundwater 0 0 0
Forrest Farm Subdivision Outside cities and towns 577 Groundwater 0 0 0
Laurel Ridge Outside cities and towns 560 Groundwater 0 0 0
Persimmon Hills Mechanicsville 514 Groundwater 0 0 0
Wilderness Run Outside cities and towns 511 Groundwater 0 0 0
Lexington Estates Outside cities and towns 300 Groundwater 0 0 0
Birch Manor Outside cities and towns 272 Groundwater 0 0 0
Charlotte Hall VA Home Charlotte Hall 270 Groundwater 1 0 0
Grandview Haven Outside cities and towns 269 Groundwater 0 0 0
Piney Point Landings Tall Timbers 239 Groundwater 0 0 0
Villages at Leonardtown Outside cities and towns 239 Groundwater 0 0 0
Fenwick Manor Outside cities and towns 234 Groundwater 0 0 0
Leonardtown Farm Outside cities and towns 193 Groundwater 0 0 0
Southgate Lexington Park 188 Groundwater 0 0 0
Langley Mobile Home Park Outside cities and towns 175 Groundwater 1 0 0
King & Kennedy Outside cities and towns 169 Groundwater 0 0 0
Mount Pleasant Water Co., Inc. Outside cities and towns 150 Groundwater 2 0 0
Holland Forest Outside cities and towns 139 Groundwater 0 0 0
Fox Meadow Outside cities and towns 128 Groundwater 0 0 0
Cook's Trailer Court (Aka Garrett TP) Outside cities and towns 120 Groundwater 0 0 0
Christmas Tree Farm Trailer Park Outside cities and towns 100 Groundwater 3 0 0
Mulberry South Outside cities and towns 65 Groundwater 0 0 0
Hearts Desire Outside cities and towns 65 Groundwater 0 0 0
Wild Goose Crest Subdivision Mechanicsville 65 Groundwater 0 0 0

Cities and towns in St. Mary's County

10 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