Sumner, 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. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against other tracked counties rather than against these fixed caps.
Environmental data for Sumner in Tennessee · Population: 200,553
TRI sites such as U.S. Tva Gallatin Fossil Plant; Depor Industries-South; Crown Group Portland Tn Plant; SDWIS systems such as GALLATIN WATER DEPARTMENT; HENDERSONVILLE U.D.; PORTLAND WATER SYSTEM anchor Sumner, TN's EPA extract. Derived burden score 36/100 (Moderate Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
U.S. Tva Gallatin Fossil Plant; Depor Industries-South; Crown Group Portland Tn Plant are among the largest Form R filers reporting in Sumner; no SDWIS system here carries an active health-based flag. AQS median AQI 45 / peak 133 in 2024.
Burden score 36/100 (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 Sumner -- 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 Sumner, TN: EPA TRI 2023 reporting year
Same facilities, both years
-9.0%
10 facilities that filed in 2022 and 2023
Whole inventory
-9.3%
1.7 million lb → 1.5 million lb, every facility that filed
Between the two reporting years, 1 facility filed for the first time and 4 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Sumner, TN's total reported releases fell from 1.7 million lb in 2022 to 1.5 million lb in 2023, based on EPA TRI filings.
- Sumner, TN's off-site transfers fell from 34.0 thousand lb in 2022 to 20.3 thousand lb in 2023, based on EPA TRI filings.
- Sumner, TN's chemicals reported fell from 30 in 2022 to 27 in 2023, based on EPA TRI filings.
- Sumner, TN's air releases fell from 144.0 thousand lb in 2022 to 131.0 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 | 224 (63%) | 130 | 4 | 133 |
| 2023 | 242 (69%) | 104 | 7 | 133 |
| 2022 | 249 (70%) | 108 | 1 | 147 |
| 2021 | 236 (66%) | 119 | 2 | 133 |
| 2020 | 273 (76%) | 86 | 1 | 121 |
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 (5)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| GALLATIN WATER DEPARTMENT | 65,964 | 0 |
| HENDERSONVILLE U.D. | 59,034 | 0 |
| PORTLAND WATER SYSTEM | 25,761 | 0 |
| CASTALIAN SPRINGS-BETHPAGE U.D. | 14,184 | 0 |
| WESTMORELAND WATER SYSTEM | 6,330 | 0 |
TRI Facilities (17)
| # | Facility | Total Releases |
|---|---|---|
| 1 | U.S. Tva Gallatin Fossil Plant | 6.9M lbs |
| 2 | Depor Industries-South | 329.1K lbs |
| 3 | Crown Group Portland Tn Plant | 108.2K lbs |
| 4 | Insteel Wire Products | 86.3K lbs |
| 5 | Hoeganaes Corp | 43.3K lbs |
| 6 | Ascent Buildings LLC | 36.8K lbs |
| 7 | Beretta USA | 27.5K lbs |
| 8 | American Colors Inc. Dispersion Facility Gallatin Tn | 13.6K lbs |
| 9 | Unipres USA Inc | 5.9K lbs |
| 10 | John L. Armitage & Co. | 4.6K lbs |
| 11 | Simpson Strong Tie | 3.7K lbs |
| 12 | Kirby Building System | 277 lbs |
| 13 | Tms International LLC | 41 lbs |
| 14 | Gt Technologies of Tennessee Inc | 0 lbs |
| 15 | Aladdin Temp-Rite | 0 lbs |
| 16 | Abb Inc | 0 lbs |
| 17 | Sr Smith LLC | 0 lbs |
Cities in Sumner (5)
Frequently Asked Questions
What is the environmental risk level in Sumner, Tennessee? ▼
Are there Superfund sites in Sumner? ▼
How many toxic release facilities are in Sumner? ▼
What is the air quality in Sumner? ▼
Is the drinking water safe in Sumner? ▼
What environmental agencies cover Sumner? ▼
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.