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California Water Hardness

10 cities ranked by hardness.

Bakersfield

15.1 GPG · 258 ppm
Very Hard

Visalia

13.7 GPG · 234 ppm
Very Hard

Riverside

13.4 GPG · 229 ppm
Very Hard

San Bernardino

12.9 GPG · 221 ppm
Very Hard

Fresno

10.5 GPG · 180 ppm
Hard

Modesto

10.4 GPG · 178 ppm
Hard

Stockton

9.2 GPG · 157 ppm
Hard

Sacramento

8 GPG · 137 ppm
Hard

Oakland

2 GPG · 34 ppm
Soft

San Francisco

1.5 GPG · 25 ppm
Soft