Macoupin, 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.
Environmental data for Macoupin in Illinois · Population: 44,566
TRI sites such as Macoupin Energy; Mennel Milling Co of Illinois; Prairie Farms Dairy Inc; SDWIS systems such as STAUNTON; GILLESPIE; VIRDEN anchor Macoupin, IL's EPA extract. Derived burden score 28/100 (Low 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 Macoupin include STAUNTON; GILLESPIE; HENDERSON PWD, while Macoupin Energy leads reported TRI pounds among local Form R filers. AQS median AQI 35 / peak 105 in 2024.
Burden score 28/100 (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 Macoupin -- 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 | 342 (93%) | 23 | 1 | 105 |
| 2023 | 310 (85%) | 45 | 10 | 129 |
| 2022 | 352 (97%) | 9 | 2 | 108 |
| 2021 | 339 (95%) | 19 | 0 | 93 |
| 2020 | 346 (95%) | 18 | 0 | 93 |
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 (28)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| STAUNTON | 5,756 | 3 |
| GILLESPIE | 3,737 | 1 |
| VIRDEN | 3,274 | 0 |
| HENDERSON PWD | 2,045 | 3 |
| GIRARD | 1,885 | 2 |
| CENTRAL MACOUPIN COUNTY RWD | 1,883 | 3 |
| BUNKER HILL | 1,760 | 0 |
| BENLD | 1,612 | 0 |
| NILWOOD | 1,394 | 2 |
| OTTER LAKE WATER COMMISSION | 1,318 | 2 |
| LAKE WILLIAMSON CHRISTIAN CENTER | 1,250 | 0 |
| SOUTH PALMYRA WATER COMMISSION | 838 | 17 |
| KAHO PUBLIC WATER DISTRICT | 785 | 3 |
| SCOTTVILLE RURAL WATER COMPANY, INC. | 695 | 20 |
| PALMYRA | 605 | 17 |
| SAWYERVILLE | 578 | 1 |
| SHIPMAN | 541 | 1 |
| DORCHESTER | 540 | 0 |
| WILSONVILLE | 536 | 0 |
| WHITE CITY | 485 | 0 |
| MOUNT CLARE | 311 | 0 |
| ROYAL LAKES | 235 | 3 |
| CHESTERFIELD | 184 | 3 |
| MODESTO | 182 | 13 |
| ROCKBRIDGE | 180 | 1 |
| HETTICK | 174 | 18 |
| EAGARVILLE | 127 | 2 |
| PALMYRA-MODESTO WATER COMMISSION | 110 | 16 |
TRI Facilities (3)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Macoupin Energy | 6.8K lbs |
| 2 | Mennel Milling Co of Illinois | 0 lbs |
| 3 | Prairie Farms Dairy Inc | 0 lbs |
Cities in Macoupin (19)
Frequently Asked Questions
What is the environmental risk level in Macoupin, Illinois? ▼
Are there Superfund sites in Macoupin? ▼
How many toxic release facilities are in Macoupin? ▼
What is the air quality in Macoupin? ▼
Is the drinking water safe in Macoupin? ▼
What environmental agencies cover Macoupin? ▼
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.