Davis, 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.
Environmental data for Davis in Utah · Population: 366,742
TRI sites such as Hf Sinclair Woods Cross Refining LLC; Big West Oil LLC; Nexeo Solutions Llc-Clearfield; SDWIS systems such as LAYTON CITY WATER SYSTEM; BOUNTIFUL CITY WATER SYSTEM; SYRACUSE CITY WATER SYSTEM; NPL sites such as Bountiful/Woods Cross 5th South PCE Plume; Five Points PCE Plume; Intermountain Waste Oil Refinery anchor Davis, UT's EPA extract. Derived burden score 72/100 (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 Davis include BOUNTIFUL CITY WATER SYSTEM; CLINTON CITY WATER SYSTEM; SOUTH DAVIS WATER DISTRICT, while Hf Sinclair Woods Cross Refining LLC leads reported TRI pounds among local Form R filers. AQS median AQI 46 / peak 133 in 2024.
Burden score 72/100 (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 Davis -- 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 Davis, UT: EPA TRI 2023 reporting year
Same facilities, both years
+14.0%
20 facilities that filed in 2022 and 2023
Whole inventory
+14.0%
650.9 thousand lb → 741.9 thousand 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.
- Davis, UT's total reported releases rose from 650.9 thousand lb in 2022 to 741.9 thousand lb in 2023, based on EPA TRI filings.
- Davis, UT's off-site transfers rose from 181.1 thousand lb in 2022 to 352.8 thousand lb in 2023, based on EPA TRI filings.
- Davis, UT's water releases fell from 350 lb in 2022 to 101 lb in 2023, based on EPA TRI filings.
- Davis, UT's air releases fell from 469.4 thousand lb in 2022 to 389.0 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 | 234 (64%) | 117 | 15 | 133 |
| 2023 | 211 (58%) | 141 | 12 | 151 |
| 2022 | 210 (58%) | 145 | 10 | 147 |
| 2021 | 205 (56%) | 134 | 25 | 156 |
| 2020 | 217 (59%) | 135 | 13 | 157 |
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 (19)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| LAYTON CITY WATER SYSTEM | 82,000 | 0 |
| BOUNTIFUL CITY WATER SYSTEM | 37,500 | 3 |
| SYRACUSE CITY WATER SYSTEM | 35,561 | 0 |
| KAYSVILLE CITY WATER SYSTEM | 32,976 | 0 |
| CLINTON CITY WATER SYSTEM | 23,000 | 6 |
| NORTH SALT LAKE CITY WATER SYSTEM | 18,655 | 0 |
| CENTERVILLE CITY WATER SYSTEM | 17,155 | 0 |
| WOODS CROSS CITY WATER SYSTEM | 13,110 | 0 |
| SOUTH DAVIS WATER DISTRICT | 10,565 | 4 |
| WEST POINT CITY WATER SYSTEM | 10,040 | 2 |
| FRUIT HEIGHTS CITY WATER SYSTEM | 6,075 | 4 |
| WEST BOUNTIFUL CITY WATER SYSTEM | 5,600 | 0 |
| SUNSET CITY WATER SYSTEM | 5,300 | 0 |
| MUTTON HOLLOW IMPROVEMENT DISTRICT | 695 | 0 |
| CREEKWOOD PARK WATER SYSTEM | 192 | 42 |
| CASCADE ACADEMY | 75 | 4 |
| COYOTE CROSSING | 72 | 0 |
| CANYON ESTATES WATER SYSTEM | 50 | 0 |
| COBBLES CONDOMINIUM HOA | 31 | 0 |
TRI Facilities (24)
Superfund Sites (3)
| Site Name | Status | HRS Score |
|---|---|---|
| Bountiful/Woods Cross 5th South PCE Plume | NPL Site | 50.00 |
| Five Points PCE Plume | NPL Site | 50.00 |
| Intermountain Waste Oil Refinery | Deleted NPL Site | 50.00 |
Cities in Davis (13)
Frequently Asked Questions
What is the environmental risk level in Davis, Utah? ▼
Are there Superfund sites in Davis? ▼
How many toxic release facilities are in Davis? ▼
What is the air quality in Davis? ▼
Is the drinking water safe in Davis? ▼
What environmental agencies cover Davis? ▼
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.