Windham, CT
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 Windham in Connecticut
Windham, CT is tracked across three EPA datasets covering 19 Toxics Release Inventory (TRI) facilities, 35 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 46/100 (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 450.4K lbs of reported toxic releases under EPCRA Section 313, while 30 water systems carry an active health-based violation in the SDWIS record. EPA Air Quality System monitors logged a median AQI of 34 and a peak AQI of 122 in 2024, with 95% 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 | 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 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 (35)
| System | Population | 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 | 7 |
| JUSTICE RESOURCE INSTITUTE, INC. | 56 | 0 |
| MARIANAPOLIS PREP SCHOOL - ST ALBERTS | 51 | 10 |
| KNOLLBROOK VILLAGE ELDERLY HOUSING | 48 | 1 |
| COUNTRY ACRES PARK | 48 | 1 |
| SEELY - BROWN VILLAGE | 48 | 1 |
| HUBBARD HILL APARTMENTS | 36 | 11 |
| 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 |
| GORMAN ROAD APARTMENTS | 25 | 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 |
Cities in Windham (12)
Frequently Asked Questions
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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.