Water Quality

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.

• Fairfax Water Service Area - Water Quality
• Washington Aqueduct Service Area - Water Quality

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.