York, PA
A PlainEnviro-computed score from reported facility/violation counts, not an official EPA rating, health forecast, or population-adjusted rate. See methodology. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against every other tracked county rather than against fixed national thresholds.
Environmental data for York in Pennsylvania · Population: 459,312
York, PA is tracked across three EPA datasets covering 50 Toxics Release Inventory (TRI) facilities, 41 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 72/100 (High Risk), calibrated against national distributions for facility density, chemical release volume, Superfund concentration, and water-system health violations.
Industrial disclosures inside the county total 12.4M lbs of reported toxic releases under EPCRA Section 313, while 14 water systems carry an active health-based violation in the SDWIS record. EPA Air Quality System monitors logged a median AQI of 44 and a peak AQI of 101 in 2024, with 66% 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 | 240 (66%) | 125 | 1 | 101 |
| 2023 | 198 (56%) | 150 | 4 | 256 |
| 2022 | 205 (56%) | 159 | 1 | 105 |
| 2021 | 168 (47%) | 187 | 2 | 148 |
| 2020 | 221 (60%) | 145 | 0 | 97 |
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 Pennsylvania, see the EPA's AirNow.gov.
Water Systems (41)
| System | Population | Violations |
|---|---|---|
| YORK WATER CO | 206,762 | 4 |
| HANOVER MUNI WATER WORKS | 40,900 | 2 |
| DOVER TWP WATER SYS | 21,097 | 1 |
| RED LION MUNICIPAL AUTHORITY | 15,882 | 0 |
| DALLASTOWN YOE WATER AUTH | 12,300 | 0 |
| WEST MANCHESTER TWP AUTH | 9,960 | 0 |
| DILLSBURG AREA AUTHORITY | 8,506 | 1 |
| STEWARTSTOWN BORO WATER AUTH | 5,206 | 0 |
| SHREWSBURY BOROUGH | 4,727 | 0 |
| NEW FREEDOM BORO WATER AUTH | 4,464 | 0 |
| FRANKLIN SYSTEM YORK WATER | 4,400 | 0 |
| WRIGHTSVILLE BORO MUNI AUTH | 4,076 | 2 |
| GLEN ROCK WATER AUTH | 2,000 | 0 |
| DOVER BORO WATER SYS | 1,900 | 23 |
| DELTA BORO WATER SYS | 1,400 | 0 |
| WINDSOR BORO WATER AUTH | 1,332 | 0 |
| FRANKLINTOWN BORO MUNI AUTH | 705 | 0 |
| GOLDSBORO BORO WATER CO | 475 | 0 |
| AMBLEBROOK | 450 | 0 |
| CLIFF VIEW MHP | 330 | 18 |
| WILLIAMS GROVE MHP | 282 | 0 |
| WESTERN CUMBERLAND WATER SYS | 275 | 0 |
| CARROLL VALLEY WATER SYSTEM | 267 | 0 |
| LLEWELLYNS MHP | 250 | 0 |
| JAMES DORWART APTS | 226 | 0 |
| OAK VILLAGE | 225 | 0 |
| CONEWAGO VALLEY MHP | 225 | 0 |
| MT VIEW TERRACE MHP | 179 | 2 |
| EASTERN CUMBERLAND WATER SYS | 150 | 0 |
| J & A MHP | 140 | 0 |
| COUNTRY VIEW MANOR YWC | 125 | 19 |
| WHISPERING PINES MHP | 97 | 1 |
| HEIDELBERG WATER COOP CORP | 90 | 1 |
| NEW LIFE FOR GIRLS | 80 | 0 |
| AMBER HILL MHP | 70 | 1 |
| COUNTRYSIDE MHP | 60 | 0 |
| HILLSIDE MHP | 54 | 0 |
| OAKWOOD HEIGHTS MHP | 54 | 1 |
| HOUSTON RUN COMMUNITY | 50 | 0 |
| ZEIGLER MHP | 46 | 3 |
| WHERLEY PARK | 34 | 0 |
TRI Facilities (50)
Cities in York (17)
Frequently Asked Questions
What is the environmental risk level in York, Pennsylvania? ▼
Are there Superfund sites in York? ▼
How many toxic release facilities are in York? ▼
What is the air quality in York? ▼
Is the drinking water safe in York? ▼
What environmental agencies cover York? ▼
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.