Tooele, UT
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 Tooele in Utah · Population: 76,648
TRI sites such as Clean Harbors Grassy Mountain LLC; US Magnesium LLC; Energysolutions LLC; SDWIS systems such as TOOELE CITY WATER SYSTEM; GRANTSVILLE CITY; STANSBURY PARK IMPROVEMENT DISTRICT; NPL sites such as International Smelting and Refining; Jacobs Smelter; Tooele Army Depot (North Area) anchor Tooele, UT'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 Tooele include TOOELE CITY WATER SYSTEM; STOCKTON TOWN WATER SYSTEM; Goshute (Lower), while Clean Harbors Grassy Mountain LLC leads reported TRI pounds among local Form R filers. AQS median AQI 46 / peak 143 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 Tooele -- 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 Tooele, UT: EPA TRI 2023 reporting year
Same facilities, both years
-38.9%
12 facilities that filed in 2022 and 2023
Whole inventory
-38.9%
22.8 million lb → 13.9 million 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.
- Tooele, UT's total reported releases fell from 22.8 million lb in 2022 to 13.9 million lb in 2023, based on EPA TRI filings.
- Tooele, UT's air releases fell from 2.0 million lb in 2022 to 35.4 thousand lb in 2023, based on EPA TRI filings.
- Tooele, UT's land releases fell from 19.0 million lb in 2022 to 12.2 million lb in 2023, based on EPA TRI filings.
- Tooele, UT's chemicals reported fell from 142 in 2022 to 116 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 | 227 (62%) | 127 | 12 | 143 |
| 2023 | 248 (68%) | 117 | 0 | 97 |
| 2022 | 248 (68%) | 111 | 6 | 119 |
| 2021 | 229 (63%) | 120 | 14 | 157 |
| 2020 | 253 (69%) | 108 | 4 | 162 |
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 Utah, see the EPA's AirNow.gov.
Water Systems (15)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| TOOELE CITY WATER SYSTEM | 37,100 | 4 |
| GRANTSVILLE CITY | 16,284 | 0 |
| STANSBURY PARK IMPROVEMENT DISTRICT | 9,839 | 0 |
| OQUIRRH MOUNTAIN WATER CO | 2,500 | 0 |
| WENDOVER CITY WATER SYSTEM | 1,525 | 0 |
| ERDA ACRES WATER CO | 1,150 | 0 |
| SOUTH RIM WATER SYSTEM | 834 | 0 |
| LINCOLN CULINARY WATER ASSN | 660 | 0 |
| STOCKTON TOWN WATER SYSTEM | 620 | 2 |
| VERNON WATERWORKS SPECIAL SERVICE DIST | 302 | 0 |
| OPHIR CANYON WATER ASSOCIATION | 108 | 0 |
| SILVER SPUR RANCHOS | 80 | 0 |
| SPRING GLEN WATER COMPANY | 50 | 0 |
| Goshute (Lower) | 40 | 4 |
| Goshute (Upper) | 40 | 4 |
TRI Facilities (13)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Clean Harbors Grassy Mountain LLC | 32.4M lbs |
| 2 | US Magnesium LLC | 27.6M lbs |
| 3 | Energysolutions LLC | 15.4M lbs |
| 4 | Clean Harbors Aragonite LLC | 13.3M lbs |
| 5 | Airgas Nitrous Oxide Corp | 196.2K lbs |
| 6 | U.S. Tooele Army Depot South | 84.0K lbs |
| 7 | Cargill Salt | 44.7K lbs |
| 8 | U.S. Army Dugway Proving Ground | 27.2K lbs |
| 9 | U.S. Army Tooele Army Depot | 11.1K lbs |
| 10 | Clean Harbors Clive LLC | 8.2K lbs |
| 11 | Hunter Panels a Div of Carlisle Construction Materials | 2.5K lbs |
| 12 | Erda Rmx - DBA Altaview Concrete | 3 lbs |
| 13 | Geneva Rock Products Inc. - Tooele | 0 lbs |
Superfund Sites (4)
| Site Name | Status | HRS Score |
|---|---|---|
| International Smelting and Refining | Deleted NPL Site | 58.31 |
| Jacobs Smelter | NPL Site | 50.00 |
| Tooele Army Depot (North Area) | NPL Site | 53.95 |
| U.S. Magnesium | NPL Site | 59.18 |
Cities in Tooele (13)
Frequently Asked Questions
What is the environmental risk level in Tooele, Utah? ▼
Are there Superfund sites in Tooele? ▼
How many toxic release facilities are in Tooele? ▼
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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.