Prince William, VA
A PlainEnviro-computed score from reported facility/violation counts, not an official EPA rating, health forecast, or population-adjusted rate. See methodology.
Environmental data for Prince William in Virginia · Population: 484,625
Prince William, VA is tracked across three EPA datasets covering 14 Toxics Release Inventory (TRI) facilities, 4 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 34/100 (Moderate Risk), calibrated against national distributions for facility density, chemical release volume, Superfund concentration, and water-system health violations.
Industrial disclosures inside the county total 1.0M lbs of reported toxic releases under EPCRA Section 313, while 0 water systems carry an active health-based violation in the SDWIS record. EPA Air Quality System monitors logged a median AQI of 35 and a peak AQI of 87 in 2024, with 93% of observed days rated "Good" (0–50).
All figures below draw directly from federal EPA records, TRI self-reported emissions, SDWIS compliance history, NPL Hazard Ranking System scores, and AQS daily AQI summaries, and are not adjusted, weighted, or forecast. A past violation or elevated score does not itself indicate current unsafe conditions; it documents the regulatory and disclosure history publicly filed with the U.S. Environmental Protection Agency through the most recent reporting cycle.
Air Quality History (2020–2024)
EPA Air Quality Index (AQI) data showing how many days per year fall into each air quality category.
| Year | Good | Moderate | Unhealthy (SG) | Max AQI |
|---|---|---|---|---|
| 2024 | 339 (93%) | 27 | 0 | 87 |
| 2023 | 329 (90%) | 33 | 3 | 129 |
| 2022 | 337 (96%) | 13 | 0 | 93 |
| 2021 | 333 (93%) | 25 | 1 | 119 |
| 2020 | 357 (98%) | 7 | 0 | 74 |
Source: EPA Air Quality System (AQS) Annual AQI by County EPA Air Quality System (AQS) Annual AQI by County AQI categories: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), Hazardous (301+)
For real-time air quality readings and pollutant breakdowns in Virginia, see the EPA's AirNow.gov.
Water Systems (4)
| System | Population | Violations |
|---|---|---|
| MANASSAS PARK, CITY OF | 14,051 | 0 |
| LINTON HALL SCHOOL | 350 | 0 |
| BAILEYS MOBILE HOME PARK | 84 | 0 |
| ROLLING BROOK MOBILE HOME PARK | 54 | 0 |
TRI Facilities (14)
| # | Facility | Total Releases |
|---|---|---|
| 1 | U.S. Marine Corps Base Quantico (entire Facility) | 767.8K lbs |
| 2 | Micron Technology Inc. | 225.6K lbs |
| 3 | Possum Point Power Station | 37.6K lbs |
| 4 | Manassas Broad Run Ready Mix Concrete | 746 lbs |
| 5 | Virginia Concrete Dumfries Plant | 664 lbs |
| 6 | Virginia Concrete Gainesville Plant | 633 lbs |
| 7 | Virginia Concrete Woodbridge Plant | 54 lbs |
| 8 | Safety-Kleen Systems Manassas (man) | 30 lbs |
| 9 | Bae Systems Information & Electronic Systems Integration I | 19 lbs |
| 10 | Manassas Ready Mix Concrete | 3 lbs |
| 11 | Titan Virginia Ready-Mix Llc-Dumfries Plant | 0 lbs |
| 12 | Titan Virginia Ready-Mix Llc-Copperhead Plant | 0 lbs |
| 13 | Quarles Petroleum Inc. Manassas Bulk Plant | 0 lbs |
| 14 | Gainesville Rmc Facility | 0 lbs |
Cities in Prince William (5)
Frequently Asked Questions
What is the environmental risk level in Prince William, Virginia? ▼
Are there Superfund sites in Prince William? ▼
How many toxic release facilities are in Prince William? ▼
What is the air quality in Prince William? ▼
Is the drinking water safe in Prince William? ▼
What environmental agencies cover Prince William? ▼
What does this county environmental profile show?
This county environmental profile rolls up EPA Toxics Release Inventory facility reports, Safe Drinking Water Information System public-water-system filings, and Superfund National Priorities List sites for the county boundary defined by the U.S. Census Bureau. Facility counts reflect facilities with a reporting address inside the county, not where downstream environmental effects may be observed. Population figures are from the most recent Census ACS 5-year estimate. The county detail page is updated whenever the upstream EPA programs publish revised data; see the methodology page for the documented ingest cadence and the editorial choices governing how aggregations are computed.
Read our methodology - how this data is sourced, computed, and verified.