Fresno, CA water hardness

Fresno's tap water measures 129 ppm, which is hard. The number comes from City of Fresno Department of Public Utilities's 2024 published data, measured at the tap.

Score

129 ppm

Hard

Fresno shower water

Hardness bands per the U.S. Geological Survey. Range: 87 to 150 ppm across service areas.

129

Soft
0–60

Moderately hard
61–120

Hard
121–180

Very hard
181+

Source: City of Fresno Department of Public Utilities, 2024.

Elsewhere in California, San Jose tests at 155 to 545 ppm and San Diego at 276 ppm.

What this means

What Fresno Water Means for Hair and Skin

Between 121 and 180 ppm, buildup shows up over weeks rather than days: spotted glass, crusted showerheads, and shampoo that never quite rinses clean.

What removes it

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Water tests soft on a standard hardness strip

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