Public water system
Western Hills Water District/Diablo Gran
PWSID CA5010039 - Stanislaus County, California
58 PPM
3.4 GPG
Soft0Soft60120180300+
Soft (58 PPM)Verified - State Lab Tested
System Details
- Water source
- surface water
- Population served
- 2,000
- Service connections
- 596
- Status
- Active
Hardness Evidence
- Reported hardness
- 58 PPM
- Grains per gallon
- 3.4 GPG
- Data source
- California treated-water report
- Source year
- 2024
- Raw/source estimate
- 436 PPM
Linked City Reports
Served ZIP Codes
| ZIP | Location | ZIP average |
|---|---|---|
| 95363 | Patterson, CA | Hard (220 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.