Windham, CT
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 Windham in Connecticut
TRI sites such as Hutchinson Precision Sealing Systems Inc; Prysmian Cable & Systems LLC; Brookwood Laminating Inc; SDWIS systems such as PUTNAM WATER POLLUTION CONTROL AUTHORITY; WOODSTOCK ACADEMY SOUTH CAMPUS; POMFRET SCHOOL; NPL sites such as Gallup's Quarry; Linemaster Switch Corp.; Revere Textile Prints Corp. anchor Windham, CT's EPA extract. Derived burden score 66/100 (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 Windham include WOODSTOCK ACADEMY SOUTH CAMPUS; POMFRET SCHOOL; MEADOWS APARTMENTS, while Hutchinson Precision Sealing Systems Inc leads reported TRI pounds among local Form R filers. AQS median AQI 34 / peak 122 in 2024.
Burden score 66/100 (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 Windham -- 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 Windham, CT: EPA TRI 2023 reporting year
Same facilities, both years
-23.2%
16 facilities that filed in 2022 and 2023
Whole inventory
-83.6%
213.2 thousand lb → 34.9 thousand lb, every facility that filed
Between the two reporting years, 0 facilities filed for the first time and 1 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Windham, CT's total reported releases fell from 45.5 thousand lb in 2022 to 34.9 thousand lb in 2023, based on EPA TRI filings.
- Windham, CT's off-site transfers fell from 8.9 thousand lb in 2022 to 4.8 thousand lb in 2023, based on EPA TRI filings.
- Windham, CT's air releases fell from 36.6 thousand lb in 2022 to 30.1 thousand lb in 2023, based on EPA TRI filings.
- Windham, CT'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 | 340 (95%) | 17 | 2 | 122 |
| 2023 | 340 (95%) | 17 | 2 | 112 |
| 2022 | 338 (95%) | 17 | 0 | 93 |
| 2021 | 331 (92%) | 29 | 1 | 140 |
| 2020 | 345 (97%) | 11 | 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 Connecticut, see the EPA's AirNow.gov.
Water Systems (33)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| PUTNAM WATER POLLUTION CONTROL AUTHORITY | 7,300 | 0 |
| WOODSTOCK ACADEMY SOUTH CAMPUS | 620 | 1 |
| POMFRET SCHOOL | 400 | 1 |
| WYNDHAM PARK APARTMENTS | 312 | 0 |
| STERLING WATER SYSTEM | 308 | 0 |
| MEADOWS APARTMENTS | 301 | 1 |
| THE RECTORY SCHOOL | 300 | 1 |
| MATULAITIS NURSING HOME | 254 | 1 |
| QUINEBAUG MOBILE HOME PARK | 205 | 6 |
| WOODSTOCK MEADOWS CONDOMINIUM ASSN. | 180 | 3 |
| ASHFORD HILLS APARTMENTS | 136 | 3 |
| DOUGLAS MANOR | 135 | 1 |
| MARIANAPOLIS PREP SCHOOL - ST JOHNS | 128 | 1 |
| WELLSWOOD ESTATES FOUNDATION, INC. | 112 | 0 |
| ABBY WATER LLC | 100 | 2 |
| ROSELAND TERRACE ASSOCIATION, INC. | 100 | 3 |
| THOMPSON HILL WATER CO - PAULA LANE DIV | 85 | 5 |
| EVANGELICAL CHRISTIAN CENTER - MAIN | 84 | 3 |
| THOMPSON HILL WATER CO - BEECHWOOD ACRES | 77 | 4 |
| CRANBERRY BOG APARTMENTS | 72 | 2 |
| CHAPLIN WOODS CONDOMINIUMS | 69 | 2 |
| CONRADS PARK | 60 | 9 |
| MARIANAPOLIS PREP SCHOOL - ST ALBERTS | 51 | 12 |
| GORMAN ROAD APARTMENTS | 48 | 1 |
| KNOLLBROOK VILLAGE ELDERLY HOUSING | 48 | 1 |
| SEELY - BROWN VILLAGE | 48 | 2 |
| HUBBARD HILL APARTMENTS | 36 | 14 |
| VILLAGE HILL APARTMENTS | 36 | 1 |
| BROOKSCROSSING APARTMENTS | 36 | 1 |
| JUMBO APARTMENTS | 35 | 4 |
| BROOKLYN MANOR | 30 | 1 |
| MOOSUP MANOR | 27 | 6 |
| WOODSTOCK HOUSING AUTHORITY | 26 | 1 |
TRI Facilities (19)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Hutchinson Precision Sealing Systems Inc | 199.3K lbs |
| 2 | Prysmian Cable & Systems LLC | 143.6K lbs |
| 3 | Brookwood Laminating Inc | 39.5K lbs |
| 4 | United Abrasives Inc | 20.8K lbs |
| 5 | Dimension-Polyant Inc. | 16.3K lbs |
| 6 | Rogers Corp - Woodstock | 8.7K lbs |
| 7 | Pall Corp | 6.8K lbs |
| 8 | National Chromium Co Inc | 5.0K lbs |
| 9 | Rogers Corp - Moosup | 4.5K lbs |
| 10 | Winchester Interconnect Cm Corp | 3.1K lbs |
| 11 | Frito-Lay Inc | 2.9K lbs |
| 12 | Whitcraft LLC (eastford) | 78 lbs |
| 13 | Bst Systems Inc | 36 lbs |
| 14 | Quikrete - Connecticut Plant | 5 lbs |
| 15 | Builders Concrete East LLC | 0 lbs |
| 16 | Loos & Co Inc | 0 lbs |
| 17 | Nutmeg Container Corp | 0 lbs |
| 18 | Morgan Truck Body LLC - Mct | 0 lbs |
| 19 | Dubois Chemicals | 0 lbs |
Superfund Sites (4)
| Site Name | Status | HRS Score |
|---|---|---|
| Gallup's Quarry | NPL Site | 46.29 |
| Linemaster Switch Corp. | NPL Site | 33.71 |
| Revere Textile Prints Corp. | Deleted NPL Site | 41.06 |
| Yaworski Waste Lagoon | NPL Site | 36.72 |
Cities in Windham (21)
Frequently Asked Questions
What is the environmental risk level in Windham, Connecticut? ▼
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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.