Hamilton, TN
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 Hamilton in Tennessee · Population: 370,913
TRI sites such as Volkswagen Group of America Chattanooga Operations Llc.; Nippon Paint Automotive Americas; South Atlantic Galvanizing; SDWIS systems such as TENNESSEE AMERICAN WATER; HIXSON UTILITY DISTRICT; SAVANNAH VALLEY U.D.; NPL sites such as Amnicola Dump; Southside Chattanooga Lead; Tennessee Products anchor Hamilton, TN's EPA extract. Derived burden score 73/100 (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 Hamilton include SAVANNAH VALLEY U.D., while Volkswagen Group of America Chattanooga Operations Llc. leads reported TRI pounds among local Form R filers. AQS median AQI 48 / peak 126 in 2024.
Burden score 73/100 (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 Hamilton -- 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 Hamilton, TN: EPA TRI 2023 reporting year
Same facilities, both years
-3.1%
52 facilities that filed in 2022 and 2023
Whole inventory
+151.3%
394.4 thousand lb → 991.1 thousand lb, every facility that filed
These two measures point in opposite directions. Releases from the facilities present in both years fell, while the inventory-wide total rose. The difference is which facilities filed, not a different estimate of the same plants.
Between the two reporting years, 3 facilities filed for the first time and 4 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Hamilton, TN's total reported releases fell from 389.6 thousand lb in 2022 to 377.4 thousand lb in 2023, based on EPA TRI filings.
- Hamilton, TN's water releases rose from 70 lb in 2022 to 223 lb in 2023, based on EPA TRI filings.
- Hamilton, TN's land releases fell from 54.4 thousand lb in 2022 to 24.3 thousand lb in 2023, based on EPA TRI filings.
- Hamilton, TN's air releases rose from 198.2 thousand lb in 2022 to 226.4 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 | 190 (54%) | 156 | 3 | 126 |
| 2023 | 175 (48%) | 187 | 3 | 137 |
| 2022 | 169 (50%) | 171 | 1 | 105 |
| 2021 | 191 (54%) | 159 | 1 | 101 |
| 2020 | 219 (60%) | 144 | 0 | 151 |
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 Tennessee, see the EPA's AirNow.gov.
Water Systems (10)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| TENNESSEE AMERICAN WATER | 207,046 | 0 |
| HIXSON UTILITY DISTRICT | 68,306 | 0 |
| SAVANNAH VALLEY U.D. | 30,571 | 1 |
| WALDEN'S RIDGE U.D. | 9,265 | 0 |
| TN AMERICAN SEQUATCHIE VALLEY | 8,001 | 0 |
| SIGNAL MOUNTAIN WATER SYSTEM | 7,761 | 0 |
| UNION FORK-BAKEWELL U.D. | 6,464 | 0 |
| JASPER HIGHLANDS WATER SYSTEM | 1,280 | 0 |
| LONE OAK UTILITY DISTRICT | 644 | 0 |
| SUCK CREEK WATER SYSTEM | 606 | 0 |
TRI Facilities (50)
Superfund Sites (3)
| Site Name | Status | HRS Score |
|---|---|---|
| Amnicola Dump | Deleted NPL Site | 40.91 |
| Southside Chattanooga Lead | NPL Site | 50.00 |
| Tennessee Products | Deleted NPL Site | 0.00 |
Cities in Hamilton (7)
Frequently Asked Questions
What is the environmental risk level in Hamilton, Tennessee? ▼
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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.