York, ME
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.
Environmental data for York in Maine · Population: 214,731
TRI sites such as US Navy Portsmouth Naval Shipyard; Pratt & Whitney; Gvs N.a.; SDWIS systems such as KENNEBUNK, KENNEBUNKPORT & WELLS WD; KITTERY WATER DISTRICT; SANFORD WATER DISTRICT; NPL sites such as Portsmouth Naval Shipyard; Saco Municipal Landfill; Saco Tannery Waste Pits anchor York, ME's EPA extract. Derived burden score 56/100 (Moderate 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 York include SOUTH BERWICK WATER DISTRICT; BERWICK WATER DEPARTMENT; NORTH BERWICK WATER DISTRICT, while US Navy Portsmouth Naval Shipyard leads reported TRI pounds among local Form R filers. AQS median AQI 34 / peak 129 in 2024.
Burden score 56/100 (Moderate 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 York -- 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 York, ME: EPA TRI 2023 reporting year
Same facilities, both years
+127.4%
12 facilities that filed in 2022 and 2023
Whole inventory
+63.8%
29.3 thousand lb → 48.0 thousand lb, every facility that filed
Between the two reporting years, 1 facility filed for the first time and 2 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- York, ME's total reported releases rose from 20.8 thousand lb in 2022 to 47.3 thousand lb in 2023, based on EPA TRI filings.
- York, ME's air releases rose from 10.0 thousand lb in 2022 to 33.0 thousand lb in 2023, based on EPA TRI filings.
- York, ME's off-site transfers rose from 10.7 thousand lb in 2022 to 14.2 thousand lb in 2023, based on EPA TRI filings.
- York, ME's chemicals reported rose from 21 in 2022 to 22 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 | 346 (96%) | 14 | 1 | 129 |
| 2023 | 304 (93%) | 24 | 0 | 84 |
| 2022 | 230 (93%) | 14 | 2 | 126 |
| 2021 | 217 (90%) | 20 | 3 | 129 |
| 2020 | 223 (95%) | 12 | 0 | 87 |
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 Maine, see the EPA's AirNow.gov.
Water Systems (29)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| KENNEBUNK, KENNEBUNKPORT & WELLS WD | 35,663 | 0 |
| KITTERY WATER DISTRICT | 14,478 | 0 |
| SANFORD WATER DISTRICT | 14,328 | 0 |
| YORK WATER DISTRICT | 13,675 | 0 |
| SOUTH BERWICK WATER DISTRICT | 3,722 | 10 |
| LAKE ARROWHEAD COMMUNITY INC | 3,500 | 0 |
| BERWICK WATER DEPARTMENT | 2,845 | 10 |
| NORTH BERWICK WATER DISTRICT | 2,125 | 4 |
| ALFRED WATER DISTRICT | 783 | 0 |
| CORNISH WATER DISTRICT | 758 | 0 |
| LIMERICK WATER DISTRICT | 625 | 1 |
| WATERBORO WATER DISTRICT | 470 | 0 |
| KEYWOOD MANOR MHP LLC | 411 | 0 |
| OLD MARSH CONDOMINIUM | 325 | 0 |
| COLONIAL MOBILE HOME PARK | 270 | 0 |
| WOODLAND HILLS CONDO ASSOCIATION | 253 | 1 |
| PINE SPRING ROADS & WATER | 220 | 0 |
| ESTES LAKE MOBILE HOME PARK | 172 | 1 |
| MT ABRAM CHALET ASSOCIATION | 160 | 1 |
| LIMERICK MOBILE HOME PARK LLC | 115 | 2 |
| OAKWOOD MOBILE COMMUNITY ASSOCIATION | 95 | 2 |
| OAKWOOD MOBILE COMMUNITY ASSOCIATION-2 | 95 | 0 |
| BURNT MILL SETTLEMENT | 73 | 0 |
| YORK COUNTY SHELTERS | 70 | 0 |
| TWIN PINES ESTATES #1 | 63 | 0 |
| CROSSROADS COMMUNITY MHP | 57 | 1 |
| TOWN & COUNTRY TRAILER PARK | 48 | 3 |
| PINETREE VILLAGE HOMEOWNERS ASSOCIATION | 40 | 0 |
| PHEASANT HILL MHP | 35 | 0 |
TRI Facilities (16)
| # | Facility | Total Releases |
|---|---|---|
| 1 | US Navy Portsmouth Naval Shipyard | 95.1K lbs |
| 2 | Pratt & Whitney | 32.5K lbs |
| 3 | Gvs N.a. | 31.2K lbs |
| 4 | Polyvantis Sanford LLC | 14.8K lbs |
| 5 | Tom's of Maine Inc | 3.5K lbs |
| 6 | Gd Ots Inc | 2.2K lbs |
| 7 | Soleras Advanced Coatings | 1.4K lbs |
| 8 | Valmet Inc | 889 lbs |
| 9 | Downeast Energy | 165 lbs |
| 10 | Expanded Rubber Products Inc | 80 lbs |
| 11 | Hussey Seating Co | 73 lbs |
| 12 | Fiber Materials Inc | 57 lbs |
| 13 | Pike Industries Inc. - Wells | 25 lbs |
| 14 | Intermat | 4 lbs |
| 15 | Kyocera Avx Components (biddeford) Corp | 1 lbs |
| 16 | Parker Hannifin Corp Pneumatic Div Kittery Maine | 0 lbs |
Superfund Sites (3)
| Site Name | Status | HRS Score |
|---|---|---|
| Portsmouth Naval Shipyard | Deleted NPL Site | 50.00 |
| Saco Municipal Landfill | NPL Site | 29.49 |
| Saco Tannery Waste Pits | Deleted NPL Site | 43.19 |
Cities in York (17)
Frequently Asked Questions
What is the environmental risk level in York, Maine? ▼
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.