Westmoreland, PA
Transparent derived index from EPA TRI / SDWIS / Superfund extracts: not an official EPA rating. Fixed caps: facilities ≤25 pts (50+ = max), log10 releases ≤25 pts, Superfund ≤25 pts (5/site), health-violation systems ≤15 pts (3/system), high-chemical facilities ≤10 pts. Bands: High ≥60, Moderate ≥30. See methodology. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against other tracked counties rather than against these fixed caps.
Environmental data for Westmoreland in Pennsylvania · Population: 353,345
TRI sites such as Max Environmental -- Yukon Facility; Ati Flat Rolled Products Holdings LLC; Rq Resins LLC; SDWIS systems such as MAWC SWEENEY PLANT; MAWC YOUGH PLANT; NEW KENSINGTON MUNI AUTH anchor Westmoreland, PA's EPA extract. Derived burden score 70/100 (High Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
Health-flagged SDWIS rows in Westmoreland include MAWC SWEENEY PLANT; MAWC YOUGH PLANT; LATROBE MUNI AUTH, while Max Environmental -- Yukon Facility leads reported TRI pounds among local Form R filers. AQS median AQI 39 / peak 88 in 2024.
Burden score 70/100 (High Risk) is the only weighted composite on this page. The tables below list every TRI facility, SDWIS system, and Superfund site EPA has on record for Westmoreland -- not just the names called out above -- reproducing the disclosure history as filed, not a current-safety verdict. Extract current as of 2026-08-25.
Release-over-release change
What changed for Westmoreland, PA: EPA TRI 2023 reporting year
Same facilities, both years
-15.2%
34 facilities that filed in 2022 and 2023
Whole inventory
-15.1%
7.9 million lb → 6.7 million lb, every facility that filed
Between the two reporting years, 3 facilities filed for the first time and 1 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Westmoreland, PA's total reported releases fell from 7.9 million lb in 2022 to 6.7 million lb in 2023, based on EPA TRI filings.
- Westmoreland, PA's land releases fell from 6.8 million lb in 2022 to 5.5 million lb in 2023, based on EPA TRI filings.
- Westmoreland, PA's water releases rose from 318.2 thousand lb in 2022 to 370.8 thousand lb in 2023, based on EPA TRI filings.
- Westmoreland, PA's air releases fell from 165.1 thousand lb in 2022 to 155.8 thousand lb in 2023, based on EPA TRI filings.
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 | 278 (77%) | 85 | 0 | 88 |
| 2023 | 227 (76%) | 70 | 1 | 133 |
| 2022 | 198 (65%) | 106 | 0 | 76 |
| 2021 | 196 (55%) | 157 | 1 | 124 |
| 2020 | 281 (78%) | 81 | 0 | 83 |
Source: 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 (18)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| MAWC SWEENEY PLANT | 143,000 | 2 |
| MAWC YOUGH PLANT | 133,000 | 6 |
| NEW KENSINGTON MUNI AUTH | 47,800 | 0 |
| WEST CNTY MUNI AUTH-MCKEESPORT | 32,644 | 0 |
| LATROBE MUNI AUTH | 30,000 | 4 |
| MUNI AUTH OF WASHINGTON TWP | 9,100 | 8 |
| DERRY BORO MUNI AUTH | 6,500 | 0 |
| BELLE VERNON BORO MUNI AUTH | 6,000 | 2 |
| LIGONIER TWP MUNI AUTH | 3,293 | 0 |
| MAWC FURNACE RUN | 3,100 | 0 |
| YOUNGSTOWN BORO MUNI AUTH | 2,730 | 0 |
| GILPIN TWP MUNI AUTH | 1,680 | 0 |
| TORRANCE STATE HOSPITAL | 997 | 0 |
| WATERFORD WATERWORKS | 389 | 0 |
| LAUREL MOUNTAIN BOROUGH | 110 | 0 |
| NEW CASTLE ESTATES | 80 | 0 |
| PINE GARDEN APARTMENTS | 40 | 4 |
| LITTLE ACRES MHP | 30 | 2 |
TRI Facilities (43)
Cities in Westmoreland (24)
Frequently Asked Questions
What is the environmental risk level in Westmoreland, Pennsylvania? ▼
Are there Superfund sites in Westmoreland? ▼
How many toxic release facilities are in Westmoreland? ▼
What is the air quality in Westmoreland? ▼
Is the drinking water safe in Westmoreland? ▼
What environmental agencies cover Westmoreland? ▼
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.