State Hub
Virginia Water Quality
391
Utilities in database
7.3M
Residents served
28%
On private wells
2
Key contaminants tracked
Drinking Water in Virginia
Virginia has 391 community water systems serving approximately 7.3 million residents. Primary water sources include surface water. The most commonly reported contaminants include disinfection byproducts, nitrates. 28% of Virginia residents rely on private wells. DEQ holds primary enforcement authority under the Safe Drinking Water Act.
Utilities in Virginia
51–75 of 391Bvu Authority
VA1520070 · 20,000 served
Buchanan Co Psa
VA1027061 · 19,326 served
Quantico Marine Base-mainside
VA6153675 · 19,000 served
City of Colonial Heights
VA3570150 · 18,273 served
City of Radford
VA1750100 · 17,420 served
Naval Support Activity Portsmouth
VA3740500 · 17,000 served
Fort Eustis
VA3700100 · 16,900 served
City of Williamsburg
VA3830850 · 16,300 served
Town of Front Royal
VA2187406 · 15,000 served
Three Springs Regional - Rcpw
VA2165705 · 14,834 served
Amherst Co Service Authority (acsa)
VA5009250 · 14,799 served
City of Manassas Park
VA6687100 · 14,051 served
City of Martinsville
VA5690400 · 13,600 served
Wilderness
VA6137999 · 13,274 served
Lake Monticello
VA2065480 · 12,933 served
Acsa Crozet
VA2003050 · 12,415 served
Town of Warrenton
VA6061600 · 11,801 served
Wise County Regional Water System
VA1195900 · 11,500 served
Naval Support Facility, Dahlgren
VA6099340 · 11,000 served
Langley Air Force Base
VA3650350 · 10,886 served
Gloucester County Water System
VA4073311 · 10,724 served
Little Creek Amphibious Base - U.s. Navy
VA3810340 · 9,782 served
Town of Pulaski
VA1155635 · 9,473 served
Pulaski County Psa
VA1155641 · 9,452 served
Town of Big Stone Gap
VA1195100 · 9,372 served
Key Contaminant Concerns in Virginia
Nitrates
Nitrate (NO₃⁻) is a nitrogen-containing compound that forms naturally through the decomposition of organic matter. At elevated concentrations — almost always from human activity — nitrate interferes with the blood's ability to carry oxygen. The United States produces over 23 million tons of nitrogen fertilizer annually, making agricultural runoff the dominant source of nitrate contamination.
DBPs
When utilities add chlorine to water to kill pathogens, it reacts with dissolved organic matter — leaves, algae, soil — to produce disinfection byproducts (DBPs). Over 600 DBPs have been identified. The EPA regulates two groups: total trihalomethanes (TTHMs, including chloroform) and haloacetic acids (HAA5). DBP levels tend to be highest in surface water systems and in warm months when organic matter is elevated.
Virginia Water FAQs
Quick Links
Data source: Utility data from EPA SDWIS. 391 active community water systems ingested. CCR contaminant data ingestion in progress.
Last updated: 2026-04-18