St. Mary's County, Maryland Water Systems

St. Mary's County, Maryland

106 community water systems on record — 38 active, 68 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 St. Mary's County, Maryland

System name	City	Population served	Status
A&D TRAILER PARK	—	25	Inactive
BANK SQUARE	LEXINGTON PARK	1,325	Inactive
BAY RIDGE(CONNECT TO 0180007)	LEXINGTON PARK	87	Inactive
BAYCROFT SCHOOL	CALIFORNIA	30	Inactive
BAYVIEW TRAILER PARK	LEXINGTON PARK	84	Inactive
BAYVIEW TRAILER PARK	LEXINGTON PARK	84	Inactive
BIRCH MANOR	CALIFORNIA	272	Active
BIRCH MANOR	LEXINGTON PARK	160	Inactive
BRETON BAY	CALIFORNIA	1,012	Active
BRETON BAY-CHERRY COVE WATER C	LEONARDTOWN	300	Inactive
BURKES TR PK	—	100	Inactive
C/O CHARLEY PAIGE	HOLLYWOOD	200	Inactive
CALIFORNIA MOBILE HOME PARK	VIRGINIA BEACH	4	Inactive
CALIFORNIA TRAILER PARK	CALIFORNIA	81	Inactive
CEDAR COVE	CALIFORNIA	2,728	Active
CEDAR COVE - FOREST PARK	LEXINGTON PARK	45	Inactive
CHANCE WATER CO INC	GREAT MILLS	70	Inactive
CHANCE WATER CO INC	GREAT MILLS	136	Inactive
CHARLOTTE HALL	CALIFORNIA	615	Active
CHARLOTTE HALL VA HOME	MILLERSVILLE	270	Active
CHRISTMAS TREE FARM TRAILER PARK	LEONARDTOWN	100	Active
CLARKES TRAILER PARK	LEONARDTOWN	84	Inactive
COLONY SQUARE	LEXINGTON PARK	1,325	Inactive
COOK'S TRAILER COURT (AKA GARRETT TP)	HOLLYWOOD	120	Active
COUNTRY LAKES	CALIFORNIA	3,016	Active
EAST SUNRISE DRIVE	LEXINGTON PARK	325	Inactive
ESPERANZA	LEXINGTON PARK	325	Inactive
FENWICK MANOR	CALIFORNIA	234	Active
FORREST FARM SUBDIVISION	CALIFORNIA	577	Active
FOX MEADOW	CALIFORNIA	128	Active
FRIENDLY TRAILER PARK	LEXINGTON PARK	165	Inactive
GRANDVIEW HAVEN	CALIFORNIA	269	Active
GREENBRIER	CALIFORNIA	1,161	Active
GREENVIEW KNOLLS	HOLLYWOOD	1,009	Inactive
GREENVIEW KNOLLS WATER CO INC	GREAT MILLS	470	Inactive
HEARTS DESIRE	CALIFORNIA	65	Active
HICKORY HILLS (SEE 0180007)	LEXINGTON PARK	0	Inactive
HILLS & POMERANTZ PARK	LEXINGTON PARK	156	Inactive
HILLS & POMERANTZ PARK	LEXINGTON PARK	198	Inactive
HILLS TP#2	LEXINGTON PARK	50	Inactive
HILLS TRAILER PARK	LEXINGTON PARK	528	Inactive
HILLS TRAILER PARK (CONNECT TO 0180007)	HOLLYWOOD	268	Inactive
HOLLAND FOREST	CALIFORNIA	139	Active
HOLLYWOOD - SEE 018-0007	HOLLYWOOD	0	Inactive
HOLLYWOOD (SEE 1180067)	HOLLYWOOD	23	Inactive
HOLLYWOOD-TOWN CREEK WTR CO IN	HOLLYWOOD	84	Inactive
HOODS TRAILER PARK	PARK HALL	63	Inactive
HUNTING QUARTERS	CALIFORNIA	715	Active
JAY DEE COURT	LEXINGTON PARK	32	Inactive
KING & KENNEDY	CALIFORNIA	169	Active
LANGLEY MOBILE HOME PARK	LINTHICUM HEIGHTS	175	Active
LANGLEY TRAILER PARK	GREAT MILLS	108	Inactive
LAUREL RIDGE	CALIFORNIA	560	Active
LEONARDTOWN	LEONARDTOWN	1,700	Inactive
LEONARDTOWN FARM	CALIFORNIA	193	Active
LEXINGTON ESTATES	FARMINGTON HILLS	300	Active
LEXINGTON PARK	CALIFORNIA	43,030	Active
LEXINGTON PK-ST MARYS CNTY MET	LEXINGTON PK	10,000	Inactive
LORD CALVERT TRAILER PARK	LEXINGTON PARK	892	Active
LORD CALVERT TRAILER PARK	LEXINGTON PARK	495	Inactive
MARYLAND MANOR	CALIFORNIA	438	Inactive
MARYLAND MANOR MHP(SEE 0180007	LEXINGTON PARK	0	Inactive
MERFIELD LANE	LEXINGTON PARK	325	Inactive
MIDWAY TRAILER PARK	LEXINGTON PARK	33	Inactive
MIDWAY TRAILER PARK	LEXINGTON PARK	33	Inactive
MOUNT PLEASANT	AVENUE	44	Inactive
MOUNT PLEASANT WATER CO., INC.	WALDORF	150	Active
MULBERRY SOUTH	CALIFORNIA	65	Active
NATIONAL MOBILE HOMES	LEXINGTON PARK	300	Inactive
NATIONAL MOBILE HOMES	LEXINGTON PARK	207	Inactive
OAKWOOD LODGE TRAILER PARK	PINEY POINT	78	Inactive
PATUXENT NAVAL AIR STATION (NAVFAC-WASH)	PATUXENT RIVER	22,000	Active
PEGGS ROAD	LEXINGTON PARK	1,325	Inactive
PERSIMMON HILLS	CALIFORNIA	514	Active
PINEY POINT	CALIFORNIA	672	Active
PINEY POINT LANDINGS	CALIFORNIA	239	Active
PINEY PT SEAMEN SCHOOL	PINEY PT	25	Inactive
PINEY PT SEAMEN SCHOOL	PINEY PT	25	Inactive
POTOMAC SANDS (SEE 0180035)	COLUMBIA	0	Inactive
REVEL SQUARE WATER CO	CAPE ST CLAIR	1,000	Inactive
RIVERVIEW TRLR PK	PINEY POINT	80	Inactive
ROLLING ACRES	CALIFORNIA	699	Active
ROLLING ROAD	LEXINGTON PARK	325	Inactive
SAINT MARYS COLLEGE	MILLERSVILLE	2,200	Active
SHETLAND ACRES TRAILER PARK	GREAT MILLS	63	Inactive
SHETLAND ACRES TRAILER PARK	VALLEY LEE	25	Inactive
SMITH FIELDS PARK, LLC	LEONARDTOWN	0	Inactive
SMITHS TRAILER PARK	SCOTLAND	30	Inactive
SMITHS TRAILER PARK	LEXINGTON PARK	39	Inactive
SOUTHGATE	CALIFORNIA	188	Active
ST CLEMENTS SHORES WATER CO IN	LEONARDTOWN	616	Inactive
ST MARY'S METRO COMMISSION	LEXINGTON PARK	325	Inactive
ST MARYS COLLEGE	ST MARYS CITY	1,000	Inactive
ST. CLEMENTS SHORES	CALIFORNIA	620	Active
TOWN CREEK MANOR WATER CO	HOLLYWOOD	1,400	Inactive
TOWN CREEK MANOR WATER CO	HOLLYWOOD	1,400	Inactive
TOWN OF LEONARDTOWN	LEONARDTOWN	5,000	Active
TUBMAN & DOUGLAS ESTS	LENOARD TOWN	250	Inactive
VILLAGES AT LEONARDTOWN	CALIFORNIA	239	Active
W.E. SMITH / D & B TRAILER PARK	LEXINGTON PARK	28	Inactive
WARING ASSOC WTR CO	LEONARDTOWN	198	Inactive
WICOMICO SHORES	CALIFORNIA	1,262	Active
WILD GOOSE CREST SUBDIVISION	CALIFORNIA	65	Active
WILDERNESS RUN	CALIFORNIA	511	Active
WILDWOOD (SEE 0180007)	WILDEWOOD	0	Inactive
WILLOW RUN	LEXINGTON PARK	1,325	Inactive