Salt Lake, UT
A PlainEnviro-computed score from reported facility/violation counts, not an official EPA rating, health forecast, or population-adjusted rate. See methodology. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against every other tracked county rather than against fixed national thresholds.
Environmental data for Salt Lake in Utah · Population: 1,184,689
Salt Lake, UT is tracked across three EPA datasets covering 50 Toxics Release Inventory (TRI) facilities, 42 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 75/100 (High Risk), calibrated against national distributions for facility density, chemical release volume, Superfund concentration, and water-system health violations.
Industrial disclosures inside the county total 922.6M lbs of reported toxic releases under EPCRA Section 313, while 17 water systems carry an active health-based violation in the SDWIS record. EPA Air Quality System monitors logged a median AQI of 54 and a peak AQI of 230 in 2024, with 41% 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 | 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 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 (42)
| System | Population | Violations |
|---|---|---|
| SALT LAKE CITY WATER SYSTEM | 381,174 | 2 |
| WEST JORDAN CITY WATER SYSTEM | 117,025 | 2 |
| SANDY CITY WATER SYSTEM | 99,750 | 1 |
| JORDAN VALLEY WCD | 99,335 | 0 |
| SOUTH JORDAN CITY | 87,356 | 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 |
| MOUNTAIN GREEN MUTUAL WATER COMPANY | 3,500 | 0 |
| USCF - SLC | 3,100 | 0 |
| SUMMIT VISTA WATER COMPANY | 3,000 | 0 |
| COPPERTON IMPROVEMENT DISTRICT | 990 | 1 |
| HI-COUNTRY NUMBER 2 | 722 | 4 |
| 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 |
| PINE EDGE MHP | 300 | 0 |
| MUIRHOUSE HOMEOWNERS ASSOCIATION | 280 | 0 |
| WEBB WELL WATER USERS | 250 | 0 |
| PINE MEADOWS PUD | 224 | 1 |
| MARION MOBILE HOME VILLAGE | 220 | 0 |
| BOUNDARY SPRING WATER CO | 150 | 0 |
| COUNTRYSIDE ESTATES MHC | 96 | 1 |
| KOA OF ELY CAMPGROUND | 80 | 0 |
| WOODENSHOE WATER COMPANY | 76 | 5 |
| MOUNTAIN VALLEY WATER CO | 65 | 0 |
| M & J TRAILER HOME COMMUNITY | 27 | 7 |
| METROPOLITAN WATER DISTRICT | 0 | 0 |
TRI Facilities (50)
Cities in Salt Lake (13)
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? ▼
What is the air quality in Salt Lake? ▼
Is the drinking water safe in Salt Lake? ▼
What environmental agencies cover Salt Lake? ▼
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.