Public water system
Norwalk Water Supply
PWSID IA9164078 - Warren County, Iowa
430 PPM
25.1 GPG
Very Hard0Soft60120180300+
Very Hard (430 PPM)High Confidence - USGS Monitoring
System Details
- Water source
- surface water
- Population served
- 14,334
- Service connections
- 5,982
- Status
- Active
Hardness Evidence
- Reported hardness
- 430 PPM
- Grains per gallon
- 25.1 GPG
- Data source
- USGS monitoring
- Source year
- N/A
Linked City Reports
Served ZIP Codes
| ZIP | Location | ZIP average |
|---|---|---|
| 50001 | Ackworth, IA | Very Hard (289 PPM) |
| 50047 | Carlisle, IA | Very Hard (290 PPM) |
| 50061 | Cumming, IA | Very Hard (289 PPM) |
| 50118 | Hartford, IA | Very Hard (289 PPM) |
| 50125 | Spring Hill, IA | Very Hard (289 PPM) |
| 50139 | Lacona, IA | Very Hard (289 PPM) |
| 50145 | Liberty Center, IA | Very Hard (289 PPM) |
| 50160 | Martensdale, IA | Very Hard (289 PPM) |
| 50166 | Milo, IA | Very Hard (288 PPM) |
| 50210 | New Virginia, IA | Very Hard (289 PPM) |
| 50211 | Norwalk, IA | Very Hard (289 PPM) |
| 50229 | Prole, IA | Very Hard (289 PPM) |
| 50241 | Saint Marys, IA | Very Hard (289 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.