Montgomery County, Maryland Water Systems

Montgomery County, Maryland

17 community water systems on record — 6 active, 11 inactive.

Every active community water system nationwide must produce a Consumer Confidence Report under the EPA's revised rule, effective for reports due July 1, 2027.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Maryland’s official records. Always confirm current status with Maryland before making decisions based on this information.

Community water systems in Montgomery County, Maryland

System name	City	Population served	Status
BROOKE GROVE FOUNDATION	OLNEY	97	Inactive
BROOKE GROVE REHAB & NURSING CENTER	SANDY SPRING	120	Inactive
CARDEROCK ANCHORAGE	BETHESDA	30	Inactive
CITY OF ROCKVILLE	—	52,000	Active
COLUMBIA TOWERS	ALEXANDRIA	97	Active
FAIRLAND CROSSING APARTMENTS	SILVER SPRING	1,248	Active
HENDRICKS WATER CO	BETHESDA	400	Inactive
LYONS CREEK MOBILE HOME ESTATE	LOTHIAN	750	Inactive
POOLESVILLE-COMMISSIONERS	POOLESVILLE	500	Inactive
POTOMAC UTIL POTO VISTA	SILVER SPRING	350	Inactive
ROCKVILLE FILTRATION PLANT	ROCKVILLE	40,000	Inactive
SHARON NURSING HOME	OLNEY	40	Inactive
TOBY TOWN	SILVER SPRING	120	Inactive
TOBYTOWN	POTOMAC	0	Inactive
TOWN OF POOLESVILLE	POOLESVILLE	6,005	Active
WASHINGTON SUBURBAN SANITARY COMMISSION	LAUREL	1,900,000	Active
WHITLEY PARK CONDOMINIUMS	—	256	Active