Water quality for ZIP code 61931
ZIP 61931 covers Humboldt in Coles County, Illinois, one of 6 ZIP codes in the county. 16 active public water systems serve the county; 10 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Coles County
9 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Cooks Mills Water Association |
720 | 1 | 3.3 mi | |
| Mattoon Mattoon |
19,500 | 0 | 7.5 mi | |
| Eastern Illinois University Charleston |
5,500 | 3 | 9.4 mi | |
| Longacre Estates MHP |
375 | 0 | 10.5 mi | |
| Clear Water Service Corp |
8,900 | 2 | 11.1 mi | |
| Charleston Charleston |
17,286 | 5 | 11.6 mi | |
| Embarras Area Water District |
3,750 | 0 | 14.1 mi | |
| Ashmore Ashmore |
637 | 8 | 17.9 mi | |
| Oakland Oakland |
739 | 3 | 18.1 mi |
Non-community systems in Coles County (6: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Walmart Mattoon |
50 | 0 | 0 | |
|
Walmart Supercenter #0612 |
25 | 0 | 0 | |
|
Shiney Hiney Wash CO |
35 | 1 | 0 | |
|
Champion Ice Mattoon |
25 | 2 | 1 | |
|
County Market #450 |
25 | 2 | 1 | |
|
Twice the Ice Charleston |
25 | 2 | 1 |
About this data
Water systems are matched to Coles County, the county this ZIP code lies in, nearest to the ZIP code's centre first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Illinois records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.