Fairfax County Water Authority is a large public water system in EPA region 3 that provides tap water for the 20120, 20121, 20151, 20164, 20171, 20191, 20192, 20195, 22015, 22030 - 22033, 22039, 22042 - 22044, 22060, 22079, 22102, 22124, 22151 - 22153, 22181, 22182, 22206, 22303, 22304, 22307 - 22312 zip codes. It has 9 facilities where the water supply was tested for 85 chemical contaminants that impact tap water quality and human health.
The maximum reported level of HAA5 (five regulated haloacetic acids) was 63.9 µg/L. Some (1 of 64 or 2%) of the latest water samples showed levels of HAA5 (five regulated haloacetic acids) that were at or above unsafe concentration levels. The maximum reported level of Manganese was 3.1 µg/L. There were 2 contamintants found in the Fairfax County Water Authority water supply at levels that were above the minimum reporting level. 1 of the contaminants were above the reference level, which means they may pose a risk to human health.
CHAIN BRIDGE ENTRY POINT
Surface Water (SW)CHAIN BRIDGE ENTRY POINTEntry Point to the Distribution System (EP)
Corbalis WTP
Surface Water (SW)High Service Pumps EP #1Entry Point to the Distribution System (EP)
High Service Pumps EP #2Entry Point to the Distribution System (EP)
High Service Pumps EP #3Entry Point to the Distribution System (EP)
1st High to Fox Hill EP #4Entry Point to the Distribution System (EP)
Griffith WTP
Surface Water (SW)Griffith EP #22Entry Point to the Distribution System (EP)
DISTRIBUTION SYSTEM
Surface Water (SW)POCOL DRDistribution System (DS)
MALLOW TR & GUNSTON RD WYDistribution System (DS)
LAGERFIELD CIRDistribution System (DS)
HUNTER MILL RDDistribution System (DS)
NEUSE WY & CHESAPEAKE DRDistribution System (DS)
HARTWOOD LADistribution System (DS)
STANDISH RDDistribution System (DS)
SADDLE HOR DRDistribution System (DS)
WOODLARK DRDistribution System (DS)
FOREST HAVEN DR.Distribution System (DS)
OLD RESTON AVEDistribution System (DS)
EVERGREEN KNOLL CTDistribution System (DS)
TURKEY RUN REC AREA HQDistribution System (DS)
GALLOWS RDDistribution System (DS)
LEE HIGHWAYDistribution System (DS)
UNIVERSITY TANKDistribution System (DS)
Distribution System
Surface Water (SW)Lagersfield Cl. - THMMaximum Residence Time (MR)
Standish Rd. - THMMaximum Residence Time (MR)
CORBALIS WTP ENTRY POINT 002
Surface Water (SW)HIGH SERVICE PUMPSEntry Point to the Distribution System (EP)
CORBALIS WTP ENTRY POINT 003
Surface Water (SW)HIGH SERVICE PUMPSEntry Point to the Distribution System (EP)
CORBALIS WTP ENTRY POINT 004
Surface Water (SW)1ST HIGH TO FOX HILLEntry Point to the Distribution System (EP)
FINISHED WATER PUMPS
Surface Water (SW)FINISHED WATER PUMP EP001UK (UK)
FINISHED WATER PUMP EP002UK (UK)
The latest water samples were taken on February 13th, 2025.