Salt Lake, 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 Salt Lake in Utah · Population: 1,184,689
TRI sites such as Kennecott Utah Copper Mine Concentrators & Power Plant; Kennecott Utah Copper Smelter & Refinery; Hexcel Corp; SDWIS systems such as SALT LAKE CITY WATER SYSTEM; WEST JORDAN CITY WATER SYSTEM; JORDAN VALLEY WCD; NPL sites such as 700 South 1600 East PCE Plume; Davenport and Flagstaff Smelters; Kennecott (North Zone) anchor Salt Lake, UT's EPA extract. Derived burden score 100/100 (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 Salt Lake include SALT LAKE CITY WATER SYSTEM; WEST JORDAN CITY WATER SYSTEM; HERRIMAN CITY MUNICIPAL WATER DEPARTMENT, while Kennecott Utah Copper Mine Concentrators & Power Plant leads reported TRI pounds among local Form R filers. AQS median AQI 54 / peak 230 in 2024.
Burden score 100/100 (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 Salt Lake -- 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 Salt Lake, UT: EPA TRI 2023 reporting year
Same facilities, both years
+71.6%
58 facilities that filed in 2022 and 2023
Whole inventory
+71.5%
152.8 million lb → 262.1 million lb, every facility that filed
Between the two reporting years, 2 facilities filed for the first time and 2 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Salt Lake, UT's total reported releases rose from 152.8 million lb in 2022 to 262.1 million lb in 2023, based on EPA TRI filings.
- Salt Lake, UT's land releases rose from 151.3 million lb in 2022 to 260.7 million lb in 2023, based on EPA TRI filings.
- Salt Lake, UT's off-site transfers rose from 342.4 thousand lb in 2022 to 404.7 thousand lb in 2023, based on EPA TRI filings.
- Salt Lake, UT's air releases fell from 1.1 million lb in 2022 to 994.1 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 | 150 (41%) | 173 | 38 | 230 |
| 2023 | 149 (41%) | 200 | 15 | 154 |
| 2022 | 101 (28%) | 236 | 28 | 147 |
| 2021 | 122 (33%) | 195 | 39 | 177 |
| 2020 | 143 (39%) | 200 | 21 | 214 |
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 (37)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| SALT LAKE CITY WATER SYSTEM | 383,612 | 2 |
| WEST JORDAN CITY WATER SYSTEM | 117,025 | 2 |
| JORDAN VALLEY WCD | 99,335 | 0 |
| SOUTH JORDAN CITY | 89,704 | 0 |
| TAYLORSVILLE-BENNION ID | 67,098 | 0 |
| HERRIMAN CITY MUNICIPAL WATER DEPARTMENT | 60,000 | 2 |
| UNIVERSITY OF UTAH | 57,080 | 2 |
| KEARNS IMPROVEMENT DISTRICT | 56,700 | 9 |
| MURRAY CITY WATER SYSTEM | 38,723 | 4 |
| WATERPRO INC | 33,100 | 0 |
| MAGNA WATER DISTRICT | 32,100 | 1 |
| DRAPER CITY WATER SYSTEM | 23,205 | 0 |
| BLUFFDALE WATER SYSTEM | 20,000 | 0 |
| WHITE CITY WID | 15,800 | 0 |
| HOLLIDAY WATER COMPANY | 15,000 | 2 |
| ALTA TOWN WATER SYSTEM | 5,228 | 0 |
| SL COUNTY SERVICE AREA NO 3 - SNOWBIRD | 5,110 | 0 |
| USCF - SLC | 3,100 | 0 |
| COPPERTON IMPROVEMENT DISTRICT | 990 | 1 |
| HI-COUNTRY NUMBER 2 | 722 | 4 |
| SUMMIT VISTA WATER COMPANY | 630 | 0 |
| SILVER LAKE COMPANY | 522 | 0 |
| SOUTH BLUFF MHP | 507 | 0 |
| WASATCH PEAKS RANCH | 490 | 0 |
| CEDARFIELD MOBILE HOME PARK | 480 | 0 |
| HI-COUNTRY ESTATES #1 | 373 | 13 |
| SILVER FORK PIPELINE CORP | 300 | 0 |
| SWISS ALPINE WATER CO | 300 | 5 |
| MUIRHOUSE HOMEOWNERS ASSOCIATION | 280 | 0 |
| WEBB WELL WATER USERS | 250 | 0 |
| PINE MEADOWS PUD | 224 | 1 |
| MOUNT AIR SUBDIVISION | 215 | 3 |
| BOUNDARY SPRING WATER CO | 150 | 0 |
| KOA OF ELY CAMPGROUND | 80 | 0 |
| MOUNTAIN VALLEY WATER CO | 65 | 0 |
| M & J TRAILER HOME COMMUNITY | 27 | 7 |
| METROPOLITAN WATER DISTRICT | 0 | 0 |
TRI Facilities (50)
Superfund Sites (11)
| Site Name | Status | HRS Score |
|---|---|---|
| 700 South 1600 East PCE Plume | NPL Site | 50.00 |
| Davenport and Flagstaff Smelters | Deleted NPL Site | 32.50 |
| Kennecott (North Zone) | Proposed NPL Site | 59.18 |
| Midvale Slag | Deleted NPL Site | 42.47 |
| Murray Smelter | Proposed NPL Site | 86.60 |
| Petrochem Recycling Corp./Ekotek, Inc. | Deleted NPL Site | 62.81 |
| Portland Cement (Kiln Dust 2 & 3) | NPL Site | 54.40 |
| Rose Park Sludge Pit | Deleted NPL Site | 0.00 |
| Sharon Steel Corp. (Midvale Tailings) | Deleted NPL Site | 41.85 |
| Utah Power & Light/American Barrel Co. | NPL Site | 37.93 |
| Wasatch Chemical Co. (Lot 6) | NPL Site | 49.91 |
Cities in Salt Lake (20)
Frequently Asked Questions
What is the environmental risk level in Salt Lake, Utah? ▼
Are there Superfund sites in Salt Lake? ▼
How many toxic release facilities are in Salt Lake? ▼
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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.