St Louis (city), MO
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 St Louis (city) in Missouri · Population: 293,109
TRI sites such as Procter & Gamble Mgf St Louis; Sensient Colors LLC; Ameren Missouri Meramec Energy Center; SDWIS systems such as ST LOUIS CITY PWS; LAUREL ACRES MHP; PARADISE ESTATES MHP anchor St Louis (city), MO's EPA extract. Derived burden score 65/100 (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 St Louis (city) include LAUREL ACRES MHP; PARADISE ESTATES MHP; LEONARDS MHP, while Procter & Gamble Mgf St Louis leads reported TRI pounds among local Form R filers. AQS median AQI 54 / peak 156 in 2024.
Burden score 65/100 (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 St Louis (city) -- 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 St Louis (city), MO: EPA TRI 2023 reporting year
Same facilities, both years
+67.7%
47 facilities that filed in 2022 and 2023
Whole inventory
+66.8%
531.1 thousand lb → 886.2 thousand lb, every facility that filed
Between the two reporting years, 2 facilities filed for the first time and 2 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- St Louis (city), MO's total reported releases rose from 528.4 thousand lb in 2022 to 886.2 thousand lb in 2023, based on EPA TRI filings.
- St Louis (city), MO's off-site transfers rose from 285.6 thousand lb in 2022 to 727.0 thousand lb in 2023, based on EPA TRI filings.
- St Louis (city), MO's land releases fell from 49.0 thousand lb in 2022 to 0 lb in 2023, based on EPA TRI filings.
- St Louis (city), MO's water releases fell from 17 lb in 2022 to 6 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 | 139 (38%) | 217 | 9 | 156 |
| 2023 | 89 (24%) | 260 | 14 | 172 |
| 2022 | 127 (35%) | 233 | 5 | 117 |
| 2021 | 114 (31%) | 244 | 6 | 187 |
| 2020 | 137 (37%) | 224 | 4 | 156 |
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 Missouri, see the EPA's AirNow.gov.
Water Systems (5)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| ST LOUIS CITY PWS | 304,709 | 0 |
| LAUREL ACRES MHP | 124 | 1 |
| PARADISE ESTATES MHP | 58 | 1 |
| COUNTRY COVE | 52 | 0 |
| LEONARDS MHP | 48 | 2 |
TRI Facilities (50)
Cities in St Louis (city) (1)
Frequently Asked Questions
What is the environmental risk level in St Louis (city), Missouri? ▼
Are there Superfund sites in St Louis (city)? ▼
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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.