Public water system
Hidden Valley Lake Csd
PWSID CA1710015 - Lake County, California
235 PPM
13.7 GPG
Hard0Soft60120180300+
Hard (235 PPM)High Confidence - USGS Monitoring
System Details
- Water source
- groundwater
- Population served
- 6,235
- Service connections
- 2,518
- Status
- Active
Hardness Evidence
- Reported hardness
- 235 PPM
- Grains per gallon
- 13.7 GPG
- Data source
- USGS monitoring
- Source year
- N/A
Linked City Reports
Served ZIP Codes
| ZIP | Location | ZIP average |
|---|---|---|
| 95422 | Clearlake, CA | Moderately Hard (172 PPM) |
| 95423 | Clearlake Oaks, CA | Hard (210 PPM) |
| 95426 | Loch Lomond, CA | Hard (208 PPM) |
| 95443 | Glenhaven, CA | Hard (246 PPM) |
| 95451 | Kelseyville, CA | Hard (197 PPM) |
| 95453 | Lakeport, CA | Moderately Hard (177 PPM) |
| 95457 | Lower Lake, CA | Hard (209 PPM) |
| 95458 | Lucerne, CA | Hard (235 PPM) |
| 95461 | Middletown, CA | Hard (235 PPM) |
| 95464 | Nice, CA | Hard (200 PPM) |
| 95485 | Upper Lake, CA | Hard (221 PPM) |
| 95493 | Witter Springs, CA | Hard (235 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.