Water quality in Green Rock, Illinois
Green Rock is in Henry County. 80 active public water systems serve the county; 40 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 Henry County
40 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Willow Haven MHP Colona |
270 | 0 | 1.4 mi | |
| Nancys MHP Colona |
77 | 0 | 1.4 mi | |
| Colona East Colona |
2,501 | 0 | 1.6 mi | |
| Wolf Ridge Well Corporation |
95 | 2 | 3.6 mi | |
| Timber Ridge Sbdv |
90 | 3 | 4.2 mi | |
| Oak View Estates |
95 | 0 | 4.6 mi | |
| Rustic Acres Water Association |
260 | 4 | 4.6 mi | |
| Buysse Subdivision |
380 | 2 | 4.8 mi | |
| Oakwood West Subdivision |
38 | 1 | 4.9 mi | |
| Geneseo Hickory Hills HOA |
83 | 2 | 4.9 mi | |
| Sunny Hill Estates Subdivision |
375 | 1 | 6.4 mi | |
| Hazelwood Heights Subdivision |
235 | 3 | 6.5 mi | |
| Hazelwood West Subdivision |
70 | 1 | 6.7 mi | |
| Orion Orion |
1,754 | 4 | 7.3 mi | |
| Hazelwood 4th Addition |
140 | 3 | 7.5 mi | |
| Osco Mutual Water Supply Company, Inc. |
80 | 1 | 7.8 mi | |
| Geneseo Hills Subdivision |
500 | 1 | 8.0 mi | |
| Timber Brook Estates |
120 | 3 | 8.7 mi | |
| Geneseo Geneseo |
6,539 | 0 | 8.9 mi | |
| Country Estates Subdivision |
188 | 5 | 9.5 mi | |
| Lake Lynwood Water System |
75 | 2 | 10.2 mi | |
| Lynn Water Association, INC |
100 | 2 | 10.9 mi | |
| Andover Andover |
565 | 1 | 11.1 mi | |
| Cambridge Cambridge |
2,086 | 0 | 12.9 mi | |
| Ophiem PWS |
110 | 4 | 14.1 mi |
Non-community systems in Henry County (39: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Henry County, nearest to Green Rock 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 or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.
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.