Fairfax County, Virginia Water Systems

Fairfax County, Virginia

16 community water systems on record — 5 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 Virginia’s official records. Always confirm current status with Virginia before making decisions based on this information.

Community water systems in Fairfax County, Virginia

System name	City	Population served	Status
FAIRFAX COUNTY WATER AUTHORITY	HERNDON	1,121,613	Active
FAIRFAX WATER - ARLINGTON SPECIAL	LORTON	1,327	Inactive
FALLS CHURCH - ARLINGTON SPECIAL	FALLS CHURCH	984	Inactive
FCWA - LORTON WTP OLD, NEW, & RIVER STA	LORTON	411,608	Inactive
FCWA-GUNSTON MANOR/HALLOWING POINT	MERRIFIELD	244	Inactive
FORT BELVOIR	FORT BELVOIR	39,303	Active
GREAT FALLS PK TURKEY RUN HDQT	MCLEAN	25	Inactive
HALLOWING POINT-FAIRFAX COUNTY WATER	OCCOQUAN	600	Inactive
HERNDON, TOWN OF	HERNDON	24,601	Active
LEE-HI OAKS - MRS. POTTER	FAIRFAX	35	Inactive
MADEIRA SCHOOL	MCLEAN	400	Inactive
MILL RUN ACRES-FAIRFAX COUNTY WATER	OCLOQUAN	92	Inactive
RIVERSIDE MANOR- FAIRFAX COUNTY WATER	MERRIFIELD	184	Inactive
TAUXEMONT	ALEXANDRIA	250	Active
VIENNA, TOWN OF	VIENNA	30,000	Active
WILEY SUBDIVISION	MERRIFIELD	284	Inactive