Somerset, PA
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 Somerset in Pennsylvania · Population: 73,255
Somerset, PA is tracked across three EPA datasets covering 6 Toxics Release Inventory (TRI) facilities, 32 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 39/100 (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 938.3K lbs of reported toxic releases under EPCRA Section 313, while 10 water systems carry an active health-based violation in the SDWIS record. EPA Air Quality System monitors logged a median AQI of 37 and a peak AQI of 90 in 2024, with 90% 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 | 323 (90%) | 35 | 0 | 90 |
| 2023 | 333 (91%) | 32 | 0 | 93 |
| 2022 | 351 (98%) | 9 | 0 | 90 |
| 2021 | 339 (93%) | 24 | 0 | 90 |
| 2020 | 357 (98%) | 8 | 0 | 71 |
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 (32)
| System | Population | Violations |
|---|---|---|
| WINDBER AREA AUTH | 9,463 | 0 |
| CONEMAUGH TWP MUNI AUTH | 7,800 | 0 |
| SOMERSET BORO MUNI WATER AUTH | 6,309 | 0 |
| SOMERSET TWP MUNI AUTH OAKRIDG | 3,800 | 1 |
| BOSWELL BORO MUNI AUTH | 2,900 | 0 |
| MEYERSDALE MUNI AUTH | 2,566 | 16 |
| BERLIN BORO MUNI AUTH | 2,468 | 0 |
| CENTRAL CITY WATER AUTH | 1,984 | 0 |
| JENNERSTOWN MUNI AUTH | 1,625 | 0 |
| LINCOLN TWP MUNI AUTH | 1,400 | 0 |
| SOMERSET TWP M A FRIEDENS | 1,374 | 0 |
| ROCKWOOD BORO MUNI AUTH | 1,250 | 0 |
| INDIAN LAKE BORO WATERWORKS | 1,246 | 0 |
| CAIRNBROOK IMPROVEMENT ASSN | 910 | 0 |
| HIDDEN VALLEY RESORT LP | 750 | 1 |
| SALISBURY BORO WATER COMM | 725 | 0 |
| GRAY AREA WATR AUTH OF JEN TWP | 700 | 0 |
| CONFLUENCE BORO MUNI AUTH | 645 | 33 |
| HOOVERSVILLE BORO | 645 | 8 |
| JENNER TWP MUNI AUTH | 576 | 0 |
| SOMERSET TWP MA READING MINES | 494 | 4 |
| GARRETT BORO WATER SYS | 449 | 0 |
| JEFFERSON TWP WATER AND SEWER | 350 | 0 |
| ADDISON AREA WATER AUTH | 284 | 7 |
| SOMERSET TWP MUN AUTH LISTIE | 218 | 5 |
| GLADES PIKE ESTATES MHP LLC | 180 | 1 |
| LAUREL MOUNTAIN VILLAGE | 100 | 0 |
| WILBUR COMMUNITY WATER | 97 | 0 |
| STONEBRIDGE GARDENS MHP | 75 | 5 |
| MILFORD TWP MUNIC AUTH | 75 | 0 |
| REST ASSURED ASSISTED LIVING | 70 | 0 |
| SOMERSET CNTY QUEMAHONING SYST | 25 | 0 |
TRI Facilities (6)
| # | Facility | Total Releases |
|---|---|---|
| 1 | North American Hoganas | 933.0K lbs |
| 2 | Aaadcg Inc. Rockwood Div | 5.2K lbs |
| 3 | Hoover Conveyor & Fabrication Corp | 5 lbs |
| 4 | Berkebile Oil Co Inc | 0 lbs |
| 5 | 4 Guys Inc | 0 lbs |
| 6 | Iti Trailer & Truck Bodies Inc | 0 lbs |
Cities in Somerset (4)
Frequently Asked Questions
What is the environmental risk level in Somerset, Pennsylvania? ▼
Are there Superfund sites in Somerset? ▼
How many toxic release facilities are in Somerset? ▼
What is the air quality in Somerset? ▼
Is the drinking water safe in Somerset? ▼
What environmental agencies cover Somerset? ▼
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.