Water quality for ZIP code 50602
ZIP 50602 covers Allison in Butler County, Iowa, one of 11 ZIP codes in the county. 17 active public water systems serve the county; 7 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Butler County
9 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Bristow Muni Water Supply Bristow |
145 | 1 | 5.5 mi | |
| Clarksville Water Supply Clarksville |
1,254 | 0 | 7.6 mi | |
| Dumont Water Supply Dumont |
635 | 1 | 8.5 mi | |
| Greene Muni Water Supply Greene |
994 | 0 | 10.8 mi | |
| Shell Rock Muni Water Supp Shell Rock |
1,269 | 0 | 11.5 mi | |
| Parkersburg Water Supply Parkersburg |
2,019 | 0 | 11.6 mi | |
| Aplington Water Supply Aplington |
1,126 | 0 | 11.7 mi | |
| New Hartford Water Supply New Hartford |
570 | 0 | 15.2 mi | |
| IA Regional Utilities Assoc (waverly) Waverly |
37,820 | 0 | 17.1 mi |
Non-community systems in Butler County (7: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
ST Johns Lutheran Church Greene |
52 | 1 | 0 | |
|
NE Iowa Christian Service Camp Bristow |
75 | 1 | 0 | |
|
Card, Inc. Clarksville |
50 | 1 | 0 | |
|
Poet Biorefining-Shell Rock LLC Shell Rock |
70 | 0 | 0 | |
|
Beaver Meadows Country Club Parkersburg |
25 | 1 | 0 | |
|
Round Grove Golf & Country Club Greene |
87 | 0 | 0 | |
|
Back Roads Bar & Grill Aredale |
31 | 1 | 0 |
About this data
Water systems are matched to Butler 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.