Adams, CO
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 Adams in Colorado · Population: 524,408
TRI sites such as Clean Harbors Deer Trail Llc.; Suncor Energy Commerce City Refinery; Advancedpcb; SDWIS systems such as THORNTON CITY OF; BRIGHTON CITY OF; NORTHGLENN CITY OF; NPL sites such as Broderick Wood Products; Rocky Mountain Arsenal (USARMY); Sand Creek Industrial anchor Adams, CO's EPA extract. Derived burden score 91/100 (High Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
EPCRA disclosures in Adams total 7.2M lbs; health-flagged SDWIS rows include BRIGHTON CITY OF; NORTH WASHINGTON STREET WSD; STRASBURG WSD, while Clean Harbors Deer Trail Llc. leads TRI pounds. AQS median AQI 55 / peak 161 in 2024.
Largest TRI sites in the extract: Clean Harbors Deer Trail Llc.; Suncor Energy Commerce City Refinery; Advancedpcb. Named SDWIS systems: THORNTON CITY OF; BRIGHTON CITY OF; NORTHGLENN CITY OF. NPL sites on record: Broderick Wood Products; Rocky Mountain Arsenal (USARMY); Sand Creek Industrial. Burden score 91/100 (High Risk) is the only weighted composite here; tables reproduce EPA disclosure history, not a current-safety verdict.
Release-over-release change
What changed for Adams, CO: EPA TRI 2023 reporting year
Same facilities, both years
+6.0%
47 facilities that filed in 2022 and 2023
Whole inventory
+6.0%
1.8 million lb → 1.9 million lb, every facility that filed
Between the two reporting years, 0 facilities filed for the first time and 3 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Adams, CO's total reported releases rose from 1.8 million lb in 2022 to 1.9 million lb in 2023, based on EPA TRI filings.
- Adams, CO's off-site transfers rose from 170.6 thousand lb in 2022 to 250.3 thousand lb in 2023, based on EPA TRI filings.
- Adams, CO's air releases fell from 258.7 thousand lb in 2022 to 222.0 thousand lb in 2023, based on EPA TRI filings.
- Adams, CO's water releases rose from 568 lb in 2022 to 630 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 | 147 (40%) | 197 | 20 | 161 |
| 2023 | 179 (49%) | 181 | 3 | 174 |
| 2022 | 180 (49%) | 171 | 14 | 126 |
| 2021 | 188 (52%) | 154 | 22 | 151 |
| 2020 | 192 (52%) | 162 | 11 | 151 |
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 Colorado, see the EPA's AirNow.gov.
Water Systems (34)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| THORNTON CITY OF | 226,465 | 0 |
| BRIGHTON CITY OF | 56,304 | 6 |
| NORTHGLENN CITY OF | 48,927 | 0 |
| CRESTVIEW WSD | 23,756 | 0 |
| NORTH WASHINGTON STREET WSD | 14,500 | 1 |
| FEDERAL HEIGHTS CITY OF | 11,678 | 0 |
| CHERRY CREEK VILLAGE WD | 9,215 | 0 |
| TODD CREEK VILLAGE MD | 7,363 | 0 |
| LOCHBUIE TOWN OF | 6,518 | 0 |
| BENNETT TOWN OF | 4,400 | 0 |
| NORTH PECOS WSD | 2,500 | 0 |
| STRASBURG WSD | 2,050 | 3 |
| WOODLAND HILLS MHC | 1,740 | 0 |
| FRONT RANGE | 1,620 | 0 |
| THE GROVE AT ALTA RIDGE | 1,300 | 2 |
| CASA ESTATES MHP | 1,117 | 0 |
| FRIENDLY VILLAGE OF THE ROCKIES | 1,046 | 0 |
| BYERS WSD | 1,000 | 0 |
| BELLEVIEW CHRISTIAN COLLEGE | 460 | 2 |
| HI LAND ACRES WSD | 350 | 1 |
| MOUNTAIN VIEW WUA | 320 | 3 |
| HAZELTINE HEIGHTS WATER | 261 | 0 |
| UNION PACIFIC RAILROAD CO.-KEENE WATER | 208 | 0 |
| PLEASANT VIEW ESTATES | 122 | 0 |
| WILLOW BROOK METRO DISTRICT | 120 | 0 |
| SUBURBAN ESTATES MHP | 115 | 0 |
| COUNTRY GARDENS MHP | 115 | 2 |
| NORTH WASHINGTON WUA | 90 | 8 |
| THIRD CREEK WUA | 90 | 0 |
| TUCSON WC | 90 | 0 |
| HOPE DITCH CO | 63 | 0 |
| VALLEY VISTA ESTATES | 51 | 0 |
| ROLLING PLAINS ESTATE | 40 | 10 |
| G AND M MOBILE HOME PARK | 30 | 3 |
TRI Facilities (50)
Superfund Sites (4)
| Site Name | Status | HRS Score |
|---|---|---|
| Broderick Wood Products | NPL Site | 35.13 |
| Rocky Mountain Arsenal (USARMY) | NPL Site | 58.15 |
| Sand Creek Industrial | Deleted NPL Site | 59.65 |
| Woodbury Chemical Co. | Deleted NPL Site | 44.87 |
Cities in Adams (14)
Frequently Asked Questions
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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.