Water Quality: Rockville, VA

165 water systems • 72,337 people served

Multiple Health Violations

273

Total Violations

Health-Based Violations

165

Water Systems

72,337

Population Served

Water Quality Summary

Rockville is served by 165 public water systems with a combined service population of 72,337 people, and has 273 EPA Safe Drinking Water Act violations on record. Critically, 27 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Rockville's violation count is 410% above the national average for Virginia. Contaminants associated with violations include Barium, Chlorine, Disinfection Byproducts, E. coli, TTHM.

Contaminants Found

Barium

Increases blood pressure and causes cardiovascular effects with long-term exposure.

Common source: Natural rock deposits, oil drilling operations, coal power plant waste

EPA limit: 2 mg/L

Chlorine

Eye and nose irritation at high levels; long-term exposure above the MCL may cause liver and kidney damage.

Common source: Water treatment disinfectant added to kill harmful microorganisms

EPA limit: 4.0 mg/L (MRDL — Maximum Residual Disinfectant Level)

Disinfection Byproducts

Broad category of chemicals formed during disinfection, associated with increased cancer risk and adverse reproductive effects.

Common source: Reaction of disinfectants (chlorine, ozone, chloramines) with organic matter

E. coli

Causes gastrointestinal illness; certain strains (e.g., O157:H7) can cause severe kidney failure and death.

Common source: Fecal contamination from humans or animals entering the water supply

EPA limit: Zero (no E. coli permitted in drinking water)

TTHM

Total trihalomethanes are linked to increased risk of bladder cancer and adverse reproductive outcomes.

Common source: Reaction of chlorine disinfectants with naturally occurring organic matter in water

EPA limit: 0.080 mg/L (80 ppb)

Water Systems Serving Rockville

System Name	PWSID	Source	Population	Violations
LAKE MONTICELLO	VA2065480	Surface Water	12,933	0
LAKE LAND`OR	VA6033450	Groundwater	4,818	0
POWHATAN COURTHOUSE	VA4145675	Groundwater	3,005	2
LAKE CAROLINE	VA6033425	Surface Water	2,933	2
MOUNTAIN VIEW	VA2023020	Groundwater	2,773	0
LAKE WILDERNESS	VA6177251	Groundwater	2,513	3
CAPTAINS COVE	VA3001100	Groundwater	2,380	10
SPRING MEADOWS-MEADOW GATE	VA4085770	Groundwater	2,362	1
LAKE HOLIDAY ESTATES	VA2069650	Groundwater	2,130	2
RAINBOW FOREST	VA2023480	Groundwater	1,665	0
MAYFIELD FARMS	VA4085525	Surface Water	1,444	1
QUEENS LAKE SYSTEM	VA3199700	Surface Water	1,375	12
AVONDALE	VA4085047	Groundwater	1,285	2
IRVINGTON COMMUNITY OF	VA4103550	Groundwater	1,056	0
OAK SPRINGS	VA4101600	Groundwater	985	1
PRESIDENTIAL LAKES, SECT. 14	VA6099500	Groundwater	951	4
MANAKIN FARMS	VA4075500	Groundwater	948	1
WHITE OAK ESTATES	VA2023740	Groundwater	930	0
CHERRYDALE SUBDIVISION	VA4085140	Groundwater	928	3
STONEY CREEK VILLAGE	VA2125950	Groundwater	895	3
WHITE STONE	VA4103980	Groundwater	825	0
YORK TERRACE SYSTEM	VA3199995	Surface Water	755	12
RURAL POINT CENTRAL	VA4085740	Groundwater	690	0
WEEMS	VA4103830	Groundwater	678	0
OAKWOOD/PARKVIEW	VA2023470	Groundwater	630	6
NELSON PARK	VA3199510	Surface Water	530	11
EARLYSVILLE FOREST	VA2003255	Groundwater	488	0
REEDVILLE, TOWN OF	VA4133720	Groundwater	480	1
LIVELY, COMMUNITY OF	VA4103800	Groundwater	477	0
HANOVER FARMS	VA4085350	Groundwater	471	0
GWYNNFIELD SUBDIVISION	VA4057400	Groundwater	398	0
CALLAO	VA4133160	Groundwater	393	0
LAKE SHAWNEE ESTATES	VA4145510	Groundwater	379	1
CAMPBELL`S CREEK SUBDIVISION	VA6033050	Groundwater	375	1
FIVE LAKES NO 1	VA4127198	Groundwater	360	1
HEATHERSTONE/BOTETOURT FOREST	VA2023410	Groundwater	356	0
VENTER HEIGHTS SUBDIVISION	VA4101800	Groundwater	350	0
BLUE RIDGE HEIGHTS	VA2023060	Groundwater	338	0
SHAWNEE LAND	VA2069525	Groundwater	330	7
MILL QUARTER PLANTATION	VA4145600	Groundwater	330	0
TOWN OF SALUDA	VA4119600	Groundwater	323	0
INDIAN CREEK ESTATES	VA4133400	Groundwater	318	0
CHESDIN MANOR SUBDIVISION	VA3053248	Groundwater	315	3
HEATHSVILLE	VA4133360	Groundwater	306	0
FOX RUN/CHAMPION FOREST SHORES	VA5117350	Groundwater	303	3
WALNUT GROVE NO 1	VA4085902	Groundwater	290	0
GREAT CREEK LANDING	VA5117371	Groundwater	290	6
CHESAPEAKE BAY ESTATES	VA4133200	Groundwater	288	0
HOLLY RIDGE NO 1	VA4085415	Surface Water	279	2
MALLARD BAY SUBDIVISION	VA4133620	Groundwater	264	0
COLONIAL FOREST	VA4085155	Groundwater	246	2
BROOKWOOD MANOR	VA4127055	Groundwater	230	1
LAKESIDE VILLAGE	VA5049400	Groundwater	220	1
JAMES RIVER ESTATES	VA4075400	Surface Water	219	1
FOXWELLS	VA4103350	Groundwater	218	0
YELLOW MOUNTAIN VILLAGE	VA2161665	Groundwater	205	9
JOYCEVILLE-HOLLY GROVE	VA5117390	Groundwater	205	6
LOTTSBURG	VA4133560	Groundwater	201	0
WHITE SAND HARBOUR	VA4133890	Groundwater	200	0
FRANKLIN ACRES	VA5067238	Groundwater	200	1
DUTCH HOLLOW SUBDIVISION	VA6047065	Groundwater	200	1
KINSALE, TOWN OF	VA4193600	Groundwater	198	0
WILDWOOD FOREST	VA6047955	Groundwater	188	0
PELHAM MANOR	VA6047400	Groundwater	183	2
LUTTRELLVILLE	VA4159500	Groundwater	175	0
HIGH POINT FARMS NO. 1	VA4085390	Groundwater	170	2
CARVER GARDENS	VA3199200	Surface Water	163	11
CEDARBROOKE SUBDIVISION	VA6047038	Groundwater	163	15
BURGESS	VA4133120	Groundwater	160	0
OVERLOOK HEIGHTS COMBINED	VA6047391	Groundwater	160	1
WOODRUFF SUBDIVISION	VA4101950	Groundwater	153	1
WINDY GAP MOUNTAIN VILLAGE	VA5067980	Groundwater	150	2
HOLLER SUBDIVISION	VA2171350	Groundwater	145	1
MASSANUTTEN VIEW SUBDIVISION	VA2171475	Groundwater	145	3
STONY SPRINGS SUBDIVISION	VA3053915	Groundwater	145	2
SANDY POINT SUBDIVISION	VA4193840	Groundwater	143	0
BELLS COVE SUBDIVISION	VA4133080	Groundwater	140	0
CEDAR POINTE	VA4119300	Groundwater	138	0
LEWISETTA	VA4133480	Groundwater	138	0
NOMINI BAY FARMS	VA4193675	Groundwater	138	0
ELSINORE SUBDIVISION	VA6033200	Groundwater	138	1
BRITISH WOODS	VA2023140	Groundwater	135	0
TIMBUCTU SUBDIVISION	VA5117846	Groundwater	132	4
CHURCHILL SUBDIVISION	VA6047041	Groundwater	130	0
RIVERBEND ESTATES	VA4133760	Groundwater	129	0
LANCASTER COURTHOUSE	VA4103680	Groundwater	125	0
TARTAN	VA4103630	Groundwater	123	0
ANCHOR COVE SUBDIVISION	VA5117096	Groundwater	120	6
MERRYMOUNT SUBDIVISION	VA5117450	Groundwater	118	3
TANGLEWOOD SECTION U	VA5117833	Groundwater	118	3
MERRIMAC SOUTH	VA6047330	Groundwater	118	1
CROZIER	VA4075100	Groundwater	115	0
GLEBE POINT	VA4133320	Groundwater	111	2
COLUMBIA	VA2065120	Groundwater	110	0
BUCKHEAD SUBDIVISION	VA5117125	Groundwater	110	6
COVE COLONY	VA4103250	Groundwater	105	0
CHESAPEAKE SHORES	VA4115400	Groundwater	103	5
BON HARBOURS	VA4133100	Groundwater	96	0
HORNERS BEACH	VA4193560	Groundwater	95	1
SIOUAN SHORES	VA5025625	Groundwater	95	6
PALMYRA	VA2065540	Groundwater	90	0
RYAN SUBDIVISION	VA2171683	Groundwater	90	0
WINDSOR PARK	VA4127895	Groundwater	90	0
ST. TAMMANY LANDING	VA5117831	Groundwater	90	2
TWIN CEDARS	VA6033700	Groundwater	90	6
GLENDALE ACRES	VA4036280	Groundwater	87	1
CORBIN - LEWIS ESTATES	VA4103225	Groundwater	87	0
FOREST HILLS SUBD	VA4103338	Groundwater	85	0
PLEASANT GROVE SUBDIVISION	VA5025570	Groundwater	85	3
LONG BRANCH SHORES	VA5117419	Groundwater	85	4
COBBS SHORES	VA4115450	Groundwater	83	0
HERITAGE ESTATES	VA6047300	Groundwater	80	2
MOUNTAIN VIEW TRAILER PARK	VA6047340	Groundwater	80	1
BUSHFIELD	VA4193200	Groundwater	78	0
WICOMICO CHURCH	VA4133900	Groundwater	75	0
ACHSAH ACRES	VA6113100	Groundwater	75	0
BLACK STUMP	VA4103130	Groundwater	73	1
STAGECOACH HILLS	VA2065781	Groundwater	70	2
RAINIER ESTATES	VA4085700	Groundwater	70	1
LUCYS COVE	VA4119525	Groundwater	70	0
BRUNSWICK ESTATES	VA5025500	Groundwater	70	3
CLIFFS ON THE ROANOKE	VA5117315	Groundwater	70	0
EDINBURG EXTENDED	VA2171315	Groundwater	68	0
PINE HARBOR	VA4133696	Groundwater	68	2
BELL ACRES	VA4159100	Groundwater	68	0
LANCASTER SHORES	VA4103710	Groundwater	63	0
DRYSDALE SUBDIVISION	VA6061125	Groundwater	63	2
MILLERS SQUARE	VA4057568	Groundwater	60	0
PAGEBROOK	VA4075630	Surface Water	60	2
OAK PARK SUBDIVISION	VA6113170	Groundwater	60	0
GENERAL PARKER SHORES	VA4193440	Groundwater	58	1
NOTTOWAY ACRES SUBDIVISION	VA5025550	Groundwater	58	4
VINEYARD GROVE	VA4103947	Groundwater	57	0
HICKS HILL SUBDIVISION	VA5117378	Groundwater	55	3
HAWK`S NEST POINT	VA5117375	Groundwater	53	3
NORTHTOWN VILLAGE	VA6047360	Groundwater	53	1
BALL POINT	VA4103100	Groundwater	51	0
CHESAPEAKE COVE	VA4133203	Groundwater	50	0
GRANITE HALL SHORES	VA5117360	Surface Water	50	0
PEETE RIVER FARM	VA5117660	Surface Water	50	1
NORMAN ACRES SUBDIVISION	VA6047355	Groundwater	50	4
WAVERLY SUBDIVISION	VA4103950	Groundwater	49	0
MARYFIELD SUB.	VA4057566	Groundwater	48	0
BLACK CREEK SUBDIVISION	VA4101030	Groundwater	48	0
CATALPA SUBDIVISION	VA6047025	Groundwater	48	1
CHURCHFIELDS	VA4103200	Groundwater	45	0
SLOOP POINTE	VA4103825	Groundwater	45	4
SCHOOLHOUSE MEADOWS	VA4159800	Groundwater	45	0
DAINGERFIELD SUBDIVISION	VA4057250	Groundwater	43	0
FOREST VIEW SUBDIVISION	VA6047230	Groundwater	43	2
BROWNS STORE	VA4133110	Groundwater	42	0
LANE VIEW SUBDIVISION	VA5025480	Groundwater	39	3
WOLFTRAP WOODS	VA6137900	Groundwater	38	0
ROLLING ACRES	VA3081730	Groundwater	36	0
TANGLEWOOD SECTION A	VA5117834	Groundwater	35	2
WESTOVER ESTATES	VA6047865	Groundwater	35	0
VALLEY VIEW	VA6113500	Groundwater	33	1
SUNNYBROOK SUBDIVISION	VA5025650	Groundwater	30	3
PLEASANT VIEW ESTATES	VA4159700	Groundwater	28	0
HAZEL RIVER	VA6047260	Groundwater	28	3
SPRINGWOOD SUBDIVISION	VA6047475	Groundwater	28	1
HIGHBANK	VA4103540	Groundwater	25	2
MILBURN SUBDIVISION	VA4103817	Groundwater	25	0
WICOMICO RIDGE	VA4133920	Groundwater	25	0
GIBSON MILLS SUBDIVISION	VA6047250	Groundwater	25	1

Concerned About Your Water?

A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.

Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.

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Data Sources

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.

Verify at epa.gov • Search ECHO for VA