Water quality for ZIP code 50703
ZIP 50703 covers Waterloo, Elk Run Heights, and Raymond in Black Hawk County, Iowa, one of 12 ZIP codes in the county. 18 active public water systems serve the county; 5 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Black Hawk County
10 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Evansdale Water Works Evansdale |
4,561 | 0 | 5.6 mi | |
| Lenwood Utilities Dunkerton |
238 | 0 | 6.4 mi | |
| Elk Run Heights Water Supply Elk Run Heights |
1,069 | 0 | 6.4 mi | |
| Dunkerton Muni Water Supply Dunkerton |
842 | 0 | 6.6 mi | |
| Cedar Falls Mobile Home Village Cedar Falls |
388 | 0 | 8.8 mi | |
| Cedar Falls Municipal Water Utilities Cedar Falls |
40,713 | 0 | 8.9 mi | |
| Gilbertville Water Works Gilbertville |
796 | 1 | 9.9 mi | |
| Hudson Water Supply Hudson |
2,546 | 1 | 12.1 mi | |
| IA Regional Utilities Assoc (waverly) Waverly |
37,820 | 0 | 15.2 mi | |
| LA Porte City Utilities La Porte City |
2,284 | 1 | 17.0 mi |
Non-community systems in Black Hawk County (7: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Island Park Beach House Cedar Falls |
40 | 0 | 0 | |
|
Gilbertville Depot Gilbertville |
40 | 1 | 0 | |
|
Pheasant Ridge Pro Shop Cedar Falls |
155 | 0 | 0 | |
|
Farmstead Preschool Cedar Falls |
50 | 0 | 0 | |
|
Barn Happy Cedar Falls |
39 | 0 | 0 | |
|
LA Porte City Golf Club La Porte City |
40 | 1 | 1 | |
|
McFarlane Park La Porte City |
40 | 0 | 0 |
About this data
Water systems are matched to Black Hawk 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.