Public water system
Coralville Muni Water System
PWSID IA5208071 - Johnson County, Iowa
180 PPM
10.5 GPG
Hard0Soft60120180300+
Hard (180 PPM)Verified - Annual Water Quality Report
System Details
- Water source
- groundwater
- Population served
- 22,318
- Service connections
- 6,500
- Status
- Active
Hardness Evidence
- Reported hardness
- 180 PPM
- Grains per gallon
- 10.5 GPG
- Data source
- Annual Water Quality Report
- Source year
- N/A
- Raw/source estimate
- 438 PPM
Linked City Reports
Served ZIP Codes
| ZIP | Location | ZIP average |
|---|---|---|
| 52235 | Hills, IA | Hard (181 PPM) |
| 52240 | Iowa City, IA | Hard (180 PPM) |
| 52241 | Coralville, IA | Hard (182 PPM) |
| 52242 | Iowa City, IA | Hard (180 PPM) |
| 52245 | Iowa City, IA | Hard (180 PPM) |
| 52246 | Iowa City, IA | Hard (180 PPM) |
| 52317 | North Liberty, IA | Hard (180 PPM) |
| 52322 | Oxford, IA | Hard (185 PPM) |
| 52333 | Solon, IA | Hard (188 PPM) |
| 52338 | Swisher, IA | Hard (180 PPM) |
| 52340 | Tiffin, IA | Hard (186 PPM) |
| 52755 | Lone Tree, IA | Hard (181 PPM) |
How to Use This System Page
A public water system can serve multiple ZIP codes and cities. Use this page to inspect the source behind the hardness reading, then open the linked ZIP or city page for the local rollup.
If you are sizing treatment equipment, confirm your actual tap hardness with a home test or lab test before buying.