Weld, 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 Weld in Colorado · Population: 340,711
TRI sites such as Leprino Foods Co - Greeley; Metal Container Corportion - Windsor Can Plant; Golden Aluminum; SDWIS systems such as GREELEY CITY OF; ERIE TOWN OF; FIRESTONE TOWN OF anchor Weld, CO's EPA extract. Derived burden score 71/100 (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 Weld total 5.1M lbs; health-flagged SDWIS rows include JOHNSTOWN TOWN OF; FT LUPTON CITY OF; EATON TOWN OF, while Leprino Foods Co - Greeley leads TRI pounds. AQS median AQI 54 / peak 164 in 2024.
Largest TRI sites in the extract: Leprino Foods Co - Greeley; Metal Container Corportion - Windsor Can Plant; Golden Aluminum. Named SDWIS systems: GREELEY CITY OF; ERIE TOWN OF; FIRESTONE TOWN OF. Burden score 71/100 (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 Weld, CO: EPA TRI 2023 reporting year
Same facilities, both years
-6.7%
52 facilities that filed in 2022 and 2023
Whole inventory
-6.7%
1.2 million lb → 1.2 million lb, every facility that filed
Between the two reporting years, 3 facilities filed for the first time and 3 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Weld, CO's total reported releases fell from 1.2 million lb in 2022 to 1.2 million lb in 2023, based on EPA TRI filings.
- Weld, CO's land releases rose from 21 lb in 2022 to 105 lb in 2023, based on EPA TRI filings.
- Weld, CO's off-site transfers fell from 249.8 thousand lb in 2022 to 200.3 thousand lb in 2023, based on EPA TRI filings.
- Weld, CO's chemicals reported fell from 56 in 2022 to 52 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 | 149 (41%) | 196 | 19 | 164 |
| 2023 | 146 (40%) | 214 | 4 | 162 |
| 2022 | 170 (47%) | 185 | 10 | 133 |
| 2021 | 156 (43%) | 169 | 39 | 154 |
| 2020 | 166 (45%) | 187 | 13 | 140 |
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 (64)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| GREELEY CITY OF | 132,310 | 0 |
| ERIE TOWN OF | 47,444 | 0 |
| FIRESTONE TOWN OF | 27,798 | 0 |
| JOHNSTOWN TOWN OF | 27,295 | 6 |
| WINDSOR TOWN OF | 23,500 | 0 |
| EVANS CITY OF | 19,369 | 0 |
| FREDERICK TOWN OF | 17,173 | 0 |
| NORTH WELD COUNTY WD | 15,890 | 0 |
| FT LUPTON CITY OF | 12,099 | 48 |
| SEVERANCE TOWN OF | 11,733 | 0 |
| MILLIKEN TOWN OF | 9,200 | 0 |
| CENTRAL WELD CNTY WD | 7,662 | 0 |
| EATON TOWN OF | 7,328 | 3 |
| DACONO CITY OF | 6,900 | 3 |
| KEENESBURG TOWN OF | 4,650 | 4 |
| AULT TOWN OF | 4,220 | 0 |
| HUDSON TOWN OF | 3,350 | 12 |
| LONGS PEAK WD | 3,200 | 0 |
| PLATTEVILLE TOWN OF | 2,900 | 0 |
| KERSEY WD | 2,101 | 0 |
| LA SALLE TOWN OF | 2,010 | 0 |
| ARISTOCRAT RANCHETTE WATER PROJECT | 1,715 | 0 |
| BOULDER MEADOWS MHP | 1,657 | 0 |
| GILCREST TOWN OF | 1,150 | 1 |
| PIERCE TOWN OF | 1,094 | 0 |
| CAVE CREEK | 1,025 | 0 |
| CLOVERLEAF COLORADO LLC | 1,007 | 0 |
| HICKORY VILLAGE | 816 | 0 |
| MCDONALD FARMS ENTERPRISES INC | 772 | 0 |
| PRAIRIE GREENS MHP | 654 | 1 |
| SMITH CREEK CROSSING | 518 | 0 |
| NUNN TOWN OF | 499 | 0 |
| SWAN MEADOW VILLAGE | 455 | 0 |
| RIVERVIEW CG | 450 | 20 |
| EAGLE CREST MHP | 441 | 0 |
| SUNSET WD | 425 | 0 |
| WATTENBERG IMPROVEMENT ASSOC | 350 | 1 |
| WOODLANDS EAST | 350 | 0 |
| BRIGGSDALE WC | 303 | 0 |
| CAVANAUGH HILLS WS | 286 | 0 |
| COPPER KEY VILLAGE MHP | 260 | 0 |
| PIONEER MOBILE HOME PARK | 250 | 0 |
| ARRIBA TOWN OF | 216 | 0 |
| GREELEY MOBILE MANOR | 180 | 0 |
| GREEN ACRES MOBILE HOME PARK | 180 | 0 |
| ALPENSEE WD | 168 | 0 |
| STEWARTS MOBILE HOME PARK | 156 | 0 |
| GROVER TOWN OF | 154 | 0 |
| ESTATES AT BROMLEY | 150 | 0 |
| CRESTWOOD ESTATES | 140 | 0 |
| PARADISE VILLAGE COOP MOBILE HOME PARK | 140 | 0 |
| NORTHSTAR MOBILE HOME PARK | 136 | 0 |
| STORM KING MHP | 135 | 0 |
| INLAND HOUSE CONDOMINIUM ASSOCIATION | 90 | 2 |
| COLDWATER DAIRY | 84 | 0 |
| DERBY VILLAGE MOBILE HOME PARK | 81 | 0 |
| SATANK WA | 80 | 1 |
| BRIGHTON VILLAGE LLC | 77 | 19 |
| LMP COOP MHP | 75 | 0 |
| NEW RAYMER TOWN OF | 73 | 0 |
| NORTHSIDE VILLAGE MHP | 55 | 0 |
| FOX HILL WATER ASSOCIATION INC | 44 | 1 |
| ERIE MEADOWS | 41 | 0 |
| ST VRAIN WATER AUTHORITY | 0 | 0 |
TRI Facilities (50)
Cities in Weld (28)
Frequently Asked Questions
What is the environmental risk level in Weld, Colorado? ▼
Are there Superfund sites in Weld? ▼
How many toxic release facilities are in Weld? ▼
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Is the drinking water safe in Weld? ▼
What environmental agencies cover Weld? ▼
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.