Prince William County, VA
The federal environmental record for Prince William County (population 489,640): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
1
Superfund NPL sites
3
federal cleanup sites
4
PFAS-detecting water systems
10
TRI facilities
3
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Marine Corps Combat Development Command | Quantico | on the NPL | 05/31/1994 |
Drinking water: PFAS testing
Public water systems serving Prince William with at least one PFAS detection under UCMR5. The federal limit for PFOA and PFOS is 4 ng/L; EPA proposed in May 2026 to rescind the limits for the other compounds, which are shown for information.
| System | Highest results | Reading |
|---|---|---|
| QUANTICO MCB-CAMP BARRETT VA6153060 | PFBA: 9.3 ng/L PFOS: 6.5 ng/L PFHxS: 3.1 ng/L | above final limit |
| PWCSA - EAST VA6153600 | PFPeA: 19 ng/L PFHxA: 16 ng/L PFBA: 16 ng/L | above final limit |
| DALE CITY VA6153625 | PFPeA: 21.9 ng/L PFBA: 18.8 ng/L PFHxA: 18 ng/L | above final limit |
| PWCSA - WEST VA6153251 | PFPeA: 5 ng/L PFHxA: 3.6 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
10 facilities in Prince William filed TRI reports for 2024, totalling 180k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| U.S. MARINE CORPS BASE QUANTICO (ENTIRE FACILITY) | QUANTICO | Lead And Lead Compounds, Copper | 140k lb |
| MICRON TECHNOLOGY INC. | MANASSAS | Ammonia, Fluorine | 37k lb |
| VIRGINIA CONCRETE GAINESVILLE PLANT | GAINESVILLE | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Lead | 955 lb |
| POSSUM POINT POWER STATION | DUMFRIES | Ammonia | 904 lb |
| VIRGINIA CONCRETE DUMFRIES PLANT | DUMFRIES | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Lead | 221 lb |
| SAFETY-KLEEN SYSTEMS MANASSAS (MAN) | MANASSAS | Polycyclic aromatic compounds, Ethylene glycol | 12 lb |
| BAE SYSTEMS INFORMATION & ELECTRONIC SYSTEMS INTEGRATION I | MANASSAS | Lead | 5 lb |
| TITAN VIRGINIA READY-MIX LLC-DUMFRIES PLANT | DUMFRIES | Lead And Lead Compounds | 0 lb |
| ERGON ASPHALT PARTNERS LP - DUMFRIES | DUMFRIES | - | 0 lb |
| MANASSAS READY MIX CONCRETE | MANASSAS | Lead And Lead Compounds | 0 lb |
Underground fuel tanks
EPA's UST Finder records 453 tank facilities in Prince William: 479 tanks in service and 1,154 closed. 353 fuel releases are on record, of which 3 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Prince William as Zone 2, moderate predicted indoor radon (2 to 4 pCi/L average). Radon and air quality are covered in depth on lung.com.
The record for one specific address
County figures blur what matters: distance. The Address Environmental Report runs these same federal datasets against one address and reports every site, tank, polluter and water result around it, with distances, in about a minute.
Get the report - $39All federal cleanup sites on file
The wider Superfund enterprise inventory (SEMS) for Prince William, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- MARINE CORPS COMBAT DEVELOPMENT COMMANDQUANTICO
- SAM'S (JONES') JUNKYARDGAINESVILLE
- USA WOODBRIDGE RESEARCH FACILITYWOODBRIDGE