Water quality for ZIP code 50136
ZIP 50136 covers Keswick and Thornburg in Keokuk County, Iowa, one of 14 ZIP codes in the county. 12 active public water systems serve the county; 3 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Keokuk County
10 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| What Cheer Water Supply What Cheer |
646 | 0 | 5.7 mi | |
| Webster Municipal Water Works Webster |
96 | 0 | 6.8 mi | |
| Delta Water Supply Delta |
264 | 1 | 10.2 mi | |
| Sigourney Muni Water Works Sigourney |
2,004 | 0 | 10.4 mi | |
| South English Water Supply South English |
238 | 0 | 10.6 mi | |
| Harper Water Supply Harper |
118 | 0 | 14.5 mi | |
| Keota Water Dept Keota |
897 | 0 | 18.9 mi | |
| Hedrick Water Supply Hedrick |
728 | 0 | 20.5 mi | |
| Richland Water Supply Richland |
542 | 1 | 25.1 mi | |
| Wapello Rural Water Assoc. Ottumwa |
17,263 | 0 | 31.6 mi |
Non-community systems in Keokuk County (1: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Responsible Transportation LLC Sigourney |
60 | 1 | 0 |
About this data
Water systems are matched to Keokuk 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 or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.
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 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.