County drinking water records

Montgomery County, MD drinking water systems

3 community water systems serve Montgomery County, MD, reporting 1,958,005 people served in all. A system that also serves other counties counts all of its customers here.

None of them had a health-based violation in the last 10 years.

3 rely mainly on surface water, counting water bought from other systems.

Their lead service line inventories list 8 lead lines, 1,277 galvanized lines that must be replaced and 65,510 lines of unknown material.

3 more systems are placed in Montgomery County, MD by the county their records name because they have no service area map that lines up with their own records, so they are listed apart and not counted here.

Community water systems: 3
People served, sum of each system's own figure: 1,958,005
Systems with a health-based violation, last 10 years: 0
Systems with one unresolved: 0
Lead service lines in inventories: 8

Water systems serving Montgomery County

3 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	Lead lines
Washington Suburban Sanitary Commission	Clinton, Potomac and 130 more	1,900,000	Surface water	8
City of Rockville	Rockville	52,000	Surface water	0
Town of Poolesville	Poolesville	6,005	Groundwater under direct influence	0

Systems placed by county record in Montgomery County

3 systems

EPA has no service area map for these systems. They are placed by the county their records name (the counties EPA lists them serving, or the county coded in their IDs where EPA lists none), and without a map they are not counted in the figures above.

System	Serves	People served	Main source	Lead lines
Fairland Crossing Apartments	County on record	1,248	Purchased surface water	No inventory
Whitley Park Condominiums	County on record	256	Purchased surface water	No inventory
Columbia Towers	County on record	97	Not reported	No inventory

Cities and towns in Montgomery County

57 places

Ashton-Sandy Spring1 system
Aspen Hill1 system
Bethesda1 system
Brookeville1 system
Brookmont1 system
Burnt Mills1 system
Burtonsville1 system
Cabin John1 system
Calverton1 system
Chevy Chase CDP1 system
Chevy Chase Section Five1 system
Chevy Chase Section Three1 system
Chevy Chase town1 system
Chevy Chase View1 system
Chevy Chase Village1 system
Clarksburg1 system
Cloverly1 system
Colesville1 system
Damascus1 system
Darnestown1 system
Derwood1 system
Fairland1 system
Flower Hill1 system
Forest Glen1 system
Four Corners1 system
Friendship Heights Village1 system
Gaithersburg1 system
Garrett Park1 system
Germantown1 system
Glen Echo1 system
Glenmont1 system
Hillandale1 system
Kemp Mill1 system
Kensington1 system
Layhill1 system
Laytonsville1 system
Leisure World1 system
Martin's Additions1 system
Montgomery Village1 system
North Bethesda1 system
North Chevy Chase1 system
North Kensington1 system
North Potomac1 system
Olney1 system
Poolesville1 system
Potomac1 system
Redland1 system
Rockville1 system
Silver Spring1 system
Somerset1 system
South Kensington1 system
Spencerville1 system
Takoma Park1 system
Travilah1 system
Washington Grove1 system
Wheaton1 system
White Oak1 system

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