Water quality in Rio, Illinois
Rio is in Knox County. 45 active public water systems serve the county; 25 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Knox County
16 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Henderson Henderson |
375 | 5 | 6.5 mi | |
| Wataga Wataga |
965 | 5 | 8.7 mi | |
| Oneida Oneida |
644 | 1 | 9.4 mi | |
| Galesburg Galesburg |
31,620 | 0 | 10.8 mi | |
| Windwood Water System, Inc. |
185 | 1 | 11.3 mi | |
| Altona Altona |
483 | 1 | 12.2 mi | |
| East Galesburg East Galesburg |
860 | 2 | 12.8 mi | |
| Knoxville Knoxville |
3,120 | 1 | 14.7 mi | |
| Victoria Victoria |
268 | 2 | 16.9 mi | |
| Aqua Illinois-Oak Run |
1,885 | 0 | 17.0 mi | |
| Abingdon Abingdon |
3,275 | 1 | 21.1 mi | |
| Williamsfield Williamsfield |
647 | 2 | 23.5 mi | |
| Maquon Maquon |
218 | 3 | 24.8 mi | |
| ST Augustine St Augustine |
119 | 0 | 26.9 mi | |
| Yates City Yates City |
828 | 1 | 30.5 mi | |
| IL American-Cedar Water |
172 | 0 | — |
Non-community systems in Knox County (28: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Community Bible Church |
60 | 0 | 0 | |
|
Gamber Cove |
100 | 2 | 1 | |
|
Galesburg East KOA |
25 | 0 | 0 | |
|
Oak Run Camping Area |
100 | 3 | 0 | |
|
Stonefort Campground |
25 | 4 | 1 | |
|
Double Tree Hills |
25 | 3 | 2 | |
|
Lake Bracken CC Clubhouse |
120 | 0 | 0 | |
|
Lake Bracken C C Pool Well |
100 | 0 | 0 | |
|
Lake Bracken CC Golf Course Bath Room |
25 | 0 | 0 | |
|
Woodland Hills Camping & Recreation |
25 | 4 | 2 | |
|
Lake Calhoun Association #5 |
25 | 0 | 0 | |
|
Camp Akita/a Frame Well |
100 | 3 | 1 | |
|
Happy Hollow Lake Ass C/o H SM |
25 | 4 | 1 | |
|
Twisted Sisters Bar and Grill |
30 | 0 | 0 | |
|
Knox CO Sportsmens Club |
25 | 1 | 1 | |
|
Faith Bible Camp |
50 | 3 | 1 | |
|
Walmart Supercenter #775 |
25 | 0 | 0 | |
|
I74 Spoon River Rest Area |
2,356 | 0 | 0 | |
|
Camp Akita Lodge Well |
134 | 1 | 0 | |
|
Dahinda UM Church |
100 | 0 | 0 | |
|
Camp Akita Bathhouse Well |
60 | 1 | 0 | |
|
Camp Akita Girls Village |
36 | 3 | 1 | |
|
Cactus Country |
30 | 0 | 0 | |
|
Cabin Fever Campground |
26 | 4 | 3 | |
|
HI LO Grocery Abingdon |
25 | 0 | 0 | |
|
HI LO Market Galesburg |
25 | 0 | 0 | |
|
Kooler Ice Victoria |
25 | 0 | 0 | |
|
Quick Stop |
25 | 0 | 0 |
About this data
Water systems are matched to Knox County, nearest to Rio 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.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 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.