Peoria, IL
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 Peoria in Illinois · Population: 179,831
TRI sites such as Peoria Disposal Co #1; Keystone Steel & Wire Co D/b/a Liberty Steel & Wire Peoria; Edwards Power Station; SDWIS systems such as CHILLICOTHE; PEORIA HEIGHTS; PLEASANT VALLEY PWD anchor Peoria, IL's EPA extract. Derived burden score 57/100 (Moderate 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 Peoria include PLEASANT VALLEY PWD; T-L RURAL WATER DISTRICT; LIMESTONE-WALTERS PWD, while Peoria Disposal Co #1 leads reported TRI pounds among local Form R filers. AQS median AQI 44 / peak 100 in 2024.
Burden score 57/100 (Moderate 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 Peoria -- 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 Peoria, IL: EPA TRI 2023 reporting year
Same facilities, both years
-62.1%
12 facilities that filed in 2022 and 2023
Whole inventory
-78.7%
1.1 million lb → 232.2 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.
- Peoria, IL's total reported releases fell from 612.6 thousand lb in 2022 to 232.2 thousand lb in 2023, based on EPA TRI filings.
- Peoria, IL's land releases fell from 282.0 thousand lb in 2022 to 41.3 thousand lb in 2023, based on EPA TRI filings.
- Peoria, IL's off-site transfers fell from 215.8 thousand lb in 2022 to 61.5 thousand lb in 2023, based on EPA TRI filings.
- Peoria, IL's air releases rose from 113.3 thousand lb in 2022 to 127.8 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 | 236 (69%) | 108 | 0 | 100 |
| 2023 | 187 (55%) | 131 | 21 | 151 |
| 2022 | 181 (57%) | 138 | 0 | 100 |
| 2021 | 181 (50%) | 179 | 1 | 101 |
| 2020 | 247 (68%) | 116 | 1 | 115 |
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 Illinois, see the EPA's AirNow.gov.
Water Systems (17)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| CHILLICOTHE | 6,660 | 0 |
| PEORIA HEIGHTS | 5,908 | 0 |
| PLEASANT VALLEY PWD | 3,783 | 1 |
| T-L RURAL WATER DISTRICT | 2,243 | 1 |
| ELMWOOD | 2,058 | 0 |
| LIMESTONE-WALTERS PWD | 2,023 | 1 |
| PRINCEVILLE | 1,901 | 0 |
| DUNLAP | 1,603 | 0 |
| HANNA CITY | 1,253 | 0 |
| BRIMFIELD | 856 | 0 |
| MAPLETON | 261 | 2 |
| KINGSTON MINES | 259 | 1 |
| FOX CREEK FARMS WATER COMPANY | 203 | 0 |
| FAWN HILLS SUBDIVISION | 183 | 0 |
| JUBILEE WATER COMPANY, INC. | 72 | 0 |
| SANTA FE ESTATES WATER ASSOCIATION | 68 | 2 |
| BUFFALO HOLLOW FARMS WATER ASSOC | 45 | 0 |
TRI Facilities (17)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Peoria Disposal Co #1 | 17.0M lbs |
| 2 | Keystone Steel & Wire Co D/b/a Liberty Steel & Wire Peoria | 4.2M lbs |
| 3 | Edwards Power Station | 4.0M lbs |
| 4 | Caterpillar Inc Mapleton Plant | 873.9K lbs |
| 5 | Evonik Corp | 376.7K lbs |
| 6 | Arxada LLC | 169.0K lbs |
| 7 | Lanxess Corp | 111.5K lbs |
| 8 | Biourja Renewables LLC | 102.3K lbs |
| 9 | Komatsu America Corp | 51.3K lbs |
| 10 | Azz Galvanizing Services-Peoria | 25.0K lbs |
| 11 | Prairie Farms Dairy Inc | 6.3K lbs |
| 12 | Ingredion | 695 lbs |
| 13 | Cast Technologies Inc | 544 lbs |
| 14 | Tms International LLC | 52 lbs |
| 15 | US Dod Usaf Peoria Il Ang | 44 lbs |
| 16 | Vcna Prairie LLC - Yard 1028 | 0 lbs |
| 17 | Chillicothe Metal Co Inc | 0 lbs |
Cities in Peoria (12)
Frequently Asked Questions
What is the environmental risk level in Peoria, Illinois? ▼
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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.