Jefferson, NY
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 Jefferson in New York · Population: 116,130
Jefferson, NY is tracked across three EPA datasets covering 10 Toxics Release Inventory (TRI) facilities, 57 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 42/100 (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 827.1K lbs of reported toxic releases under EPCRA Section 313, while 25 water systems carry an active health-based violation in the SDWIS record. EPA Air Quality System monitors logged a median AQI of 32 and a peak AQI of 80 in 2024, with 97% 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 | 352 (97%) | 11 | 0 | 80 |
| 2023 | 344 (95%) | 17 | 1 | 101 |
| 2022 | 352 (98%) | 8 | 0 | 84 |
| 2021 | 332 (95%) | 19 | 0 | 97 |
| 2020 | 345 (96%) | 15 | 0 | 90 |
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 New York, see the EPA's AirNow.gov.
Water Systems (57)
| System | Population | Violations |
|---|---|---|
| FORT DRUM | 34,000 | 2 |
| WATERTOWN CITY | 27,861 | 21 |
| LERAY TOWN WD 1, 2, 4 | 7,140 | 0 |
| CARTHAGE VILLAGE | 3,600 | 37 |
| CAPE VINCENT TOWN WD 1 & 5 | 2,600 | 0 |
| SACKETS HARBOR VILLAGE | 2,200 | 0 |
| CLAYTON VILLAGE | 2,100 | 0 |
| ADAMS VILLAGE | 2,000 | 0 |
| ALEXANDRIA BAY VILLAGE | 1,900 | 0 |
| PHILADELPHIA VILLAGE | 1,800 | 1 |
| WEST CARTHAGE VILLAGE | 1,734 | 39 |
| BLACK RIVER VILLAGE | 1,600 | 0 |
| CAPE VINCENT VILLAGE | 1,500 | 0 |
| RUTLAND TOWN WD 1 | 1,500 | 0 |
| BROWNVILLE VILLAGE | 1,200 | 0 |
| DEXTER VILLAGE | 1,100 | 7 |
| ADAMS T WD 1,2,3 (ADAMS CENTER) | 1,000 | 0 |
| PAMELIA TOWN WD 4 & 5 | 1,000 | 25 |
| THERESA VILLAGE | 950 | 0 |
| ANTWERP VILLAGE | 900 | 2 |
| CAPE VINCENT TOWN WD 3, 4, & 6 | 770 | 0 |
| WATERTOWN TOWN WD 3 & 4 & 5 | 750 | 12 |
| ORLEANS TOWN WD 1 (LAFARGEVILLE) | 750 | 0 |
| HOUNSFIELD WD 2 | 725 | 29 |
| HENDERSON TOWN WD 1,2 | 700 | 8 |
| HARRISVILLE (DIANA WD 1) | 700 | 0 |
| ORLEANS TOWN WD 2 (RT 12) | 690 | 0 |
| CHAMPION WD 2, 4 & 5 | 650 | 3 |
| EVANS MILLS VILLAGE | 644 | 2 |
| CHAUMONT VILLAGE | 625 | 0 |
| WATERTOWN TOWN WD 1 & 2 | 600 | 5 |
| BROWNVILLE (T) WD #1 | 600 | 15 |
| GLEN PARK VILLAGE | 500 | 0 |
| ALEXANDRIA TOWN WD #2 - REDWOOD | 500 | 4 |
| HOUNSFIELD WD 1, 5 | 480 | 20 |
| LERAY TOWN WD 3 | 480 | 0 |
| MANNSVILLE VILLAGE | 450 | 0 |
| DEFERIET VILLAGE | 420 | 0 |
| CHAMPION WD 1 (GREAT BEND) | 400 | 0 |
| LYME TOWN WD 2 | 400 | 0 |
| NORTHWOODS ESTATES | 315 | 0 |
| INDIAN RIVER ESTATES, LTD. | 303 | 0 |
| HOUNSFIELD WD 3 (WESCOTT BEACH) | 270 | 0 |
| WILNA T WD 1 | 240 | 37 |
| WILNA T WD 2 | 200 | 0 |
| SOUTHSIDE WATER INC. | 195 | 8 |
| RODMAN TOWN WD 1 | 180 | 0 |
| PAMELIA TOWN WD #2 | 150 | 15 |
| BROWNVILLE (T) WD #2 | 140 | 3 |
| COLD CREEK STUDIOS | 90 | 0 |
| EVERGREEN HILLS MHP | 78 | 0 |
| LYME TOWN WD 1 & 4 | 70 | 0 |
| ALEXANDRIA TOWN WD #1 - OTTER STREET | 60 | 0 |
| WADDINGTON ESTATES MHP (GU) | 60 | 11 |
| RIVERWOOD ESTATES | 30 | 1 |
| DANC (WATERTOWN / FT. DRUM) | 0 | 3 |
| DANC WESTERN REGIONAL | 0 | 7 |
TRI Facilities (10)
| # | Facility | Total Releases |
|---|---|---|
| 1 | US Army Fort Drum | 700.0K lbs |
| 2 | Great Lakes Cheese of Ny Inc. | 83.0K lbs |
| 3 | Hp Hood LLC | 23.1K lbs |
| 4 | Knowlton Technologies LLC | 13.7K lbs |
| 5 | Slack Chemical Co. Inc. | 7.3K lbs |
| 6 | New York Air Brake LLC | 46 lbs |
| 7 | Ox Specialty Paper LLC | 14 lbs |
| 8 | Griffith Energy - Watertown | 0 lbs |
| 9 | Neenah Northeast LLC | 0 lbs |
| 10 | Gold Star Feed & Grain | 0 lbs |
Cities in Jefferson (9)
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.