Public water system
Great Falls City Of
PWSID MT0000525 - Cascade County, Montana
120 PPM
7 GPG
Moderately Hard0Soft60120180300+
Moderately Hard (120 PPM)Verified - Annual Water Quality Report
System Details
- Water source
- surface water
- Population served
- 60,000
- Service connections
- 22,477
- Status
- Active
Hardness Evidence
- Reported hardness
- 120 PPM
- Grains per gallon
- 7 GPG
- Data source
- Annual Water Quality Report
- Source year
- N/A
- Raw/source estimate
- 232 PPM
Linked City Reports
Served ZIP Codes
| ZIP | Location | ZIP average |
|---|---|---|
| 59401 | Great Falls, MT | Moderately Hard (120 PPM) |
| 59404 | Great Falls, MT | Moderately Hard (120 PPM) |
| 59405 | Great Falls, MT | Moderately Hard (120 PPM) |
| 59412 | Belt, MT | Moderately Hard (121 PPM) |
| 59414 | Black Eagle, MT | Moderately Hard (137 PPM) |
| 59421 | Cascade, MT | Moderately Hard (121 PPM) |
| 59443 | Fort Shaw, MT | Moderately Hard (120 PPM) |
| 59463 | Monarch, MT | Moderately Hard (120 PPM) |
| 59465 | Neihart, MT | Moderately Hard (120 PPM) |
| 59472 | Sand Coulee, MT | Moderately Hard (120 PPM) |
| 59477 | Simms, MT | Moderately Hard (120 PPM) |
| 59480 | Stockett, MT | Moderately Hard (121 PPM) |
| 59483 | Sun River, MT | Moderately Hard (121 PPM) |
| 59485 | Ulm, MT | Moderately Hard (120 PPM) |
| 59487 | Vaughn, MT | Moderately Hard (121 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.