Public water system
St John City Of
PWSID ND4000854 - Rolette County, North Dakota
714 PPM
41.8 GPG
Very Hard0Soft60120180300+
Very Hard (714 PPM)Estimated - Nearby Data
System Details
- Water source
- groundwater
- Population served
- 341
- Service connections
- 125
- Status
- Active
Hardness Evidence
- Reported hardness
- 714 PPM
- Grains per gallon
- 41.8 GPG
- Data source
- Nearby estimate
- Source year
- N/A
Linked City Reports
Served ZIP Codes
| ZIP | Location | ZIP average |
|---|---|---|
| 58369 | Saint John, ND | Very Hard (714 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.