County · Illinois
Macoupin County, Illinois: drinking water records
This overview covers 18 ZIP codes and 30 community water systems in Macoupin County. It also stands in for 1 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Staunton IL1171050 | 5,756 | 120 | 1 | 1 | 1 ppb |
| Gillespie IL1170400 | 3,737 | 120 | 0 | 2 | 0 ppb |
| Mount Olive IL1170700 | 2,193 | 120 | 0 | 3 | 7.8 ppb |
| Carlinville IL1170150 | 6,598 | 120 | 0 | 0 | 1.2 ppb |
| Brighton IL1174160 | 5,041 | 120 | 3 | 0 | 2.1 ppb |
| Virden IL1171100 | 3,274 | 120 | 0 | 0 | 0 ppb |
| Central Macoupin County Rwd IL1170040 | 1,883 | 0 | 0 | 3 | 0 ppb |
| Benld IL1170050 | 1,612 | 0 | 0 | 1 | 0 ppb |
| South Palmyra Water Commission IL1170060 | 838 | 0 | 0 | 6 | 0 ppb |
| Kaho Public Water District IL1170030 | 785 | 0 | 0 | 3 | 2 ppb |
| Scottville Rural Water Company, INC. IL1170010 | 695 | 0 | 0 | 8 | 0 ppb |
| Palmyra IL1170800 | 605 | 0 | 0 | 6 | 0 ppb |
| Sawyerville IL1170850 | 578 | 0 | 0 | 2 | 0 ppb |
| Dorchester IL1170250 | 540 | 0 | 0 | 1 | 0 ppb |
| Wilsonville IL1171200 | 536 | 0 | 0 | 1 | 0 ppb |
| Mount Clare IL1170650 | 311 | 0 | 0 | 1 | 0 ppb |
| Chesterfield IL1170200 | 184 | 0 | 0 | 3 | 0 ppb |
| Modesto IL1170600 | 182 | 0 | 0 | 6 | 0 ppb |
| Hettick IL1170500 | 174 | 0 | 0 | 7 | 0 ppb |
| Eagarville IL1170300 | 127 | 0 | 0 | 2 | 0 ppb |
| Palmyra-Modesto Water Commission IL1175150 | 110 | 0 | 0 | 6 | 0 ppb |
| Girard IL1170450 | 1,885 | 0 | 0 | 0 | 1.3 ppb |
| Bunker Hill IL1170100 | 1,760 | 0 | 0 | 0 | 3 ppb |
| Nilwood IL1170750 | 1,394 | 0 | 0 | 0 | 0 ppb |
| Otter Lake Water Commission IL1175200 | 1,318 | 0 | 0 | 0 | 1.2 ppb |
ZIP reports in Macoupin County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 62079.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.