Public water system
Cal-Water Service Co.-Oroville
PWSID CA0410005 - Butte County, California
35 PPM
2 GPG
Soft0Soft60120180300+
Soft (35 PPM)Verified - State Lab Tested
System Details
- Water source
- surface water
- Population served
- 11,106
- Service connections
- 3,528
- Status
- Active
Hardness Evidence
- Reported hardness
- 35 PPM
- Grains per gallon
- 2 GPG
- Data source
- California treated-water report
- Source year
- 2024
- Raw/source estimate
- 192 PPM
Linked City Reports
Served ZIP Codes
| ZIP | Location | ZIP average |
|---|---|---|
| 95914 | Bangor, CA | Hard (198 PPM) |
| 95916 | Berry Creek, CA | Hard (198 PPM) |
| 95917 | Biggs, CA | Hard (200 PPM) |
| 95926 | Cohasset, CA | Hard (198 PPM) |
| 95928 | Chico, CA | Hard (198 PPM) |
| 95930 | Clipper Mills, CA | Hard (198 PPM) |
| 95938 | Durham, CA | Hard (199 PPM) |
| 95941 | Forbestown, CA | Hard (198 PPM) |
| 95942 | Butte Meadows, CA | Hard (198 PPM) |
| 95948 | Gridley, CA | Hard (199 PPM) |
| 95954 | Magalia, CA | Hard (198 PPM) |
| 95965 | Pulga, CA | Hard (198 PPM) |
| 95966 | Oroville, CA | Hard (198 PPM) |
| 95968 | Palermo, CA | Hard (198 PPM) |
| 95969 | Paradise, CA | Hard (194 PPM) |
| 95973 | Richardson Sprin, CA | Hard (198 PPM) |
| 95974 | Richvale, CA | Hard (198 PPM) |
| 95978 | Stirling City, CA | Hard (198 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.