Madison, 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 Madison in Illinois · Population: 264,631
TRI sites such as Wood River Refinery; U.S. Steel Granite City Works; Wieland Rolled Products N.a. - East Alton Casting P; SDWIS systems such as IL AMERICAN-CHAMPAIGN; IL AMERICAN-PEORIA; IL AMERICAN-EAST ST LOUIS; NPL sites such as Chemetco; Jennison-Wright Corporation; NL Industries/Taracorp Lead Smelter anchor Madison, IL's EPA extract. Derived burden score 76/100 (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 Madison include IL AMERICAN-PEORIA; IL AMERICAN-EAST ST LOUIS; TROY, while Wood River Refinery leads reported TRI pounds among local Form R filers. AQS median AQI 49 / peak 165 in 2024.
Burden score 76/100 (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 Madison -- 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 Madison, IL: EPA TRI 2023 reporting year
Same facilities, both years
-19.6%
24 facilities that filed in 2022 and 2023
Whole inventory
-19.6%
5.9 million lb → 4.8 million 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.
- Madison, IL's total reported releases fell from 5.9 million lb in 2022 to 4.8 million lb in 2023, based on EPA TRI filings.
- Madison, IL's off-site transfers fell from 1.0 million lb in 2022 to 675.2 thousand lb in 2023, based on EPA TRI filings.
- Madison, IL's land releases fell from 1.4 million lb in 2022 to 1.1 million lb in 2023, based on EPA TRI filings.
- Madison, IL's water releases fell from 2.9 million lb in 2022 to 2.4 million 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 | 193 (53%) | 167 | 4 | 165 |
| 2023 | 113 (31%) | 234 | 14 | 155 |
| 2022 | 134 (37%) | 220 | 9 | 147 |
| 2021 | 82 (22%) | 277 | 6 | 143 |
| 2020 | 129 (35%) | 233 | 3 | 112 |
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 (83)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| IL AMERICAN-CHAMPAIGN | 150,000 | 0 |
| IL AMERICAN-PEORIA | 137,575 | 2 |
| IL AMERICAN-EAST ST LOUIS | 131,368 | 1 |
| IL AMERICAN-WEST SUBURBAN | 73,978 | 0 |
| IL AMERICAN-ALTON | 46,127 | 0 |
| IL AMERICAN-GRANITE CITY | 33,572 | 0 |
| IL AMERICAN-PEKIN | 31,731 | 0 |
| COLLINSVILLE | 29,500 | 0 |
| EDWARDSVILLE | 26,808 | 0 |
| IL AMERICAN-HOMER TOWNSHIP | 24,543 | 0 |
| IL AMERICAN-STREATOR | 19,000 | 0 |
| TROY | 16,962 | 1 |
| BETHALTO | 15,210 | 0 |
| IL AMERICAN-LINCOLN | 15,200 | 5 |
| IL AMERICAN-STERLING | 14,782 | 0 |
| GLEN CARBON | 12,618 | 0 |
| IL AMERICAN-PONTIAC | 11,864 | 0 |
| IL AMERICAN-CHICAGO SUBURBAN | 11,187 | 0 |
| HIGHLAND | 10,674 | 0 |
| WOOD RIVER | 10,464 | 0 |
| MARYVILLE | 10,150 | 0 |
| IL AMERICAN-JERSEYVILLE | 8,412 | 0 |
| FOSTERBURG PWD | 7,940 | 0 |
| IL AMERICAN-SOUTH BELOIT | 7,893 | 0 |
| IL AMERICAN-VALLEY VIEW | 6,721 | 0 |
| IL AMERICAN-DUPAGE UTILITY | 6,613 | 0 |
| EAST ALTON | 5,786 | 0 |
| IL AMERICAN-FERNWAY | 5,521 | 0 |
| MITCHELL PWD | 5,253 | 0 |
| NORTH EAST CENTRAL PWD | 3,975 | 0 |
| IL AMERICAN-TOLONO | 3,604 | 6 |
| THREE COUNTY PWD | 3,575 | 4 |
| PONTOON BEACH PWD | 3,325 | 0 |
| IL AMERICAN-LIBERTY RIDGE WEST | 3,307 | 1 |
| HOLIDAY SHORES SD | 2,840 | 4 |
| SOUTHERN IL UNIVERSITY-EDWARDSVILLE | 2,817 | 0 |
| IL AMERICAN-VILLA GROVE | 2,467 | 1 |
| IL AMERICAN-FARMINGTON | 2,448 | 1 |
| IL AMERICAN-FISHER | 2,026 | 0 |
| IL AMERICAN-WAYCINDEN | 1,934 | 0 |
| ST JACOB | 1,835 | 2 |
| IL AMERICAN-CAIRO | 1,821 | 0 |
| MEADOWBROOK PWD | 1,778 | 0 |
| GRANTFORK | 1,766 | 1 |
| IL AMERICAN-ARROWHEAD | 1,581 | 0 |
| ROXANA | 1,517 | 0 |
| IL AMERICAN-MOUNT PULASKI | 1,506 | 2 |
| MOUND PWD | 1,500 | 2 |
| IL AMERICAN-ROSICLARE | 1,387 | 2 |
| IL AMERICAN-HARDIN COUNTY | 1,373 | 0 |
| HARTFORD | 1,260 | 0 |
| IL AMERICAN-ARBURY | 1,225 | 0 |
| IL AMERICAN-GLASFORD | 1,193 | 0 |
| IL AMERICAN-ANDALUSIA | 1,184 | 0 |
| IL AMERICAN-WASHINGTON ESTATES | 1,143 | 0 |
| IL AMERICAN-VALLEY MARINA | 1,102 | 0 |
| HAMEL | 1,087 | 0 |
| MARINE | 1,037 | 0 |
| IL AMERICAN-COUNTRY CLUB | 1,014 | 0 |
| IL AMERICAN-HARDIN | 839 | 1 |
| IL AMERICAN-LIVINGSTON | 825 | 0 |
| ALHAMBRA | 755 | 0 |
| MORO PWD | 723 | 1 |
| IL AMERICAN-ALPINE HEIGHTS | 707 | 0 |
| IL AMERICAN-TERRA COTTA | 681 | 0 |
| IL AMERICAN-LOMBARD HEIGHTS | 679 | 0 |
| IL AMERICAN-SAUNEMIN | 456 | 0 |
| IL AMERICAN-MORELAND | 445 | 0 |
| MERIDIAN VILLAGE | 339 | 0 |
| IL AMERICAN-BROADLANDS | 330 | 3 |
| IL AMERICAN-LIBERTY RIDGE EAST | 320 | 0 |
| IL AMERICAN-NETTLE CREEK | 317 | 0 |
| IL AMERICAN-ROLLINS | 231 | 2 |
| IL AMERICAN-RIDGECREST | 203 | 0 |
| QUAIL RUN MOBILE HOME PARK | 168 | 0 |
| COUNTRY HILLS WTR, INC. | 166 | 0 |
| IL AMERICAN-MIDWEST PALOS | 126 | 0 |
| IL AMERICAN-CENTRAL STATES DST | 117 | 0 |
| IL AMERICAN-LEONORE | 111 | 0 |
| IL AMERICAN-HOLLIS | 107 | 0 |
| IL AMERICAN-RIVER GRANGE | 62 | 0 |
| SPRING LAKE SUBDIVISION | 25 | 0 |
| IL AMERICAN-LAKE WATER COMPANY | 0 | 0 |
TRI Facilities (25)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Wood River Refinery | 13.5M lbs |
| 2 | U.S. Steel Granite City Works | 9.7M lbs |
| 3 | Wieland Rolled Products N.a. - East Alton Casting P | 3.1M lbs |
| 4 | Alton Steel Inc | 2.0M lbs |
| 5 | Gateway Energy & Coke Co | 634.0K lbs |
| 6 | Olin Winchester LLC Main Plant | 529.5K lbs |
| 7 | Amsted Rail Co Inc | 375.0K lbs |
| 8 | Precoat Metals | 340.1K lbs |
| 9 | Wieland Rolled Products N.a. - East Alton Main Plan | 224.6K lbs |
| 10 | Prairie Farms Dairy Inc | 223.9K lbs |
| 11 | Green Plains Madison LLC | 40.0K lbs |
| 12 | Trouw Nutrition USA LLC | 28.2K lbs |
| 13 | Phillips 66 Terminal | 23.5K lbs |
| 14 | Mayco Manufacturing LLC | 9.0K lbs |
| 15 | Heidtman Steel Products Inc. | 7.2K lbs |
| 16 | Midwest Metal Coatings | 7.0K lbs |
| 17 | Airgas Specialty Products - Granite City | 4.2K lbs |
| 18 | Granite City Pickling & Warehousing Inc. | 3.7K lbs |
| 19 | Eaton Highland | 302 lbs |
| 20 | Premcor Hartford Distribution Center | 129 lbs |
| 21 | Stein LLC | 53 lbs |
| 22 | Magnesium Elektron Na Inc Madison | 14 lbs |
| 23 | Ardent Mills LLC | 0 lbs |
| 24 | St Louis Screw & Bolt | 0 lbs |
| 25 | Gateway Packaging Co | 0 lbs |
Superfund Sites (3)
| Site Name | Status | HRS Score |
|---|---|---|
| Chemetco | NPL Site | 30.00 |
| Jennison-Wright Corporation | NPL Site | 40.30 |
| NL Industries/Taracorp Lead Smelter | NPL Site | 38.11 |
Cities in Madison (21)
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.