Fairfax Water provides water to a large portion of Northern Virginia. The majority of customers receive water treated
at Fairfax Water's treatment plants. Some customers receive water via the Washington Aqueduct.
To obtain water quality information use the links or the map below to select the region you are interested in and it will take you to the corresponding water quality information.
Water quality monitoring is accomplished by a highly
trained and educated laboratory staff employing the latest, most
sensitive and sophisticated analytical instrumentation. Our laboratory,
located at the Corbalis Water Treatment Plant, is certified for
drinking water analysis by the Commonwealth of Virginia.