San Miguel, 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.
Environmental data for San Miguel in Colorado · Population: 8,026
SDWIS systems such as MOUNTAIN VILLAGE TOWN OF; TELLURIDE TOWN OF; NORWOOD WATER COMMISSION anchor San Miguel, CO's EPA extract. Derived burden score 15/100 (Low Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
No TRI Form R facilities sit in San Miguel in this extract; water coverage still lists MOUNTAIN VILLAGE TOWN OF; TELLURIDE TOWN OF; NORWOOD WATER COMMISSION. AQS monitors logged median AQI 19 / peak 97 in 2024.
Burden score 15/100 (Low 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 San Miguel -- 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.
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 | 311 (86%) | 50 | 0 | 97 |
| 2023 | 185 (73%) | 68 | 0 | 84 |
| 2022 | 194 (76%) | 60 | 1 | 108 |
| 2021 | 165 (65%) | 87 | 0 | 97 |
| 2020 | 155 (63%) | 90 | 2 | 136 |
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 (11)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| MOUNTAIN VILLAGE TOWN OF | 9,700 | 0 |
| TELLURIDE TOWN OF | 7,900 | 24 |
| NORWOOD WATER COMMISSION | 1,700 | 0 |
| ALDASORO RANCH HOC | 412 | 0 |
| WILSON MESA | 290 | 0 |
| OPHIR TOWN OF | 193 | 36 |
| SAN BERNARDO HOA | 132 | 2 |
| ELK RUN HOMEOWNERS CORPORATION | 125 | 0 |
| LAST DOLLAR PUD | 96 | 3 |
| SAWPIT TOWN OF | 59 | 0 |
| TELLURIDE PINES HOA | 25 | 22 |
Cities in San Miguel (5)
Frequently Asked Questions
What is the environmental risk level in San Miguel, Colorado? ▼
Are there Superfund sites in San Miguel? ▼
How many toxic release facilities are in San Miguel? ▼
What is the air quality in San Miguel? ▼
Is the drinking water safe in San Miguel? ▼
What environmental agencies cover San Miguel? ▼
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.