Water quality in Keystone, Iowa
Keystone is in Benton County. 23 active public water systems serve the county; 8 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 Benton County
16 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Van Horne Water Works Van Horne |
779 | 0 | 5.7 mi | |
| Belle Plaine Water Dept Belle Plaine |
2,380 | 0 | 8.3 mi | |
| Blairstown Water Supply Blairstown |
738 | 1 | 8.9 mi | |
| Garrison Water Supply Garrison |
344 | 0 | 10.3 mi | |
| Newhall Water Supply Newhall |
881 | 0 | 11.9 mi | |
| Poweshiek Water Association (cr) Norway |
2,000 | 0 | 14.4 mi | |
| Vinton Municipal Water Dept Vinton |
4,938 | 0 | 14.4 mi | |
| Norway City Water Supply Norway |
466 | 0 | 15.6 mi | |
| Timber Ridge Shellsburg |
225 | 0 | 17.3 mi | |
| Atkins Municipal Water Works Atkins |
2,056 | 0 | 17.5 mi | |
| Shellsburg Water Supply Shellsburg |
961 | 0 | 18.0 mi | |
| Mount Auburn Water Supply Mount Auburn |
162 | 0 | 18.5 mi | |
| Clover Ridge Subdivision Walford |
413 | 1 | 20.5 mi | |
| Walnut Street Well Walford |
45 | 1 | 20.5 mi | |
| Terry Water Association Walford |
25 | 1 | 20.7 mi | |
| Urbana Water Supply Urbana |
1,562 | 0 | 22.4 mi |
Non-community systems in Benton County (6: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Benton County Nature Center/rodgers PK Vinton |
35 | 1 | 0 | |
|
Oakgrove Christian Church Shellsburg |
140 | 0 | 0 | |
|
Bullys Angle Inn Walford |
42 | 0 | 0 | |
|
Wildcat Bluff-Benton Conservation Center Point |
25 | 1 | 0 | |
|
Knapp Creek Event Center Walford |
100 | 3 | 1 | |
|
Lazy Acres Urbana |
99 | 3 | 1 |
About this data
Water systems are matched to Benton County, nearest to Keystone 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 Iowa 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.