Kerman Water Hardness & Quality Report (2026)
Water Hardness
7.9 grains per gallon
Source
mixed
pH Level
7.9
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
377.4 mg/L
Est. Daily Cost
$0.36
energy & soap waste
Source: USGS Water Quality Portal · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Kerman, your appliances are currently losing 18% efficiency due to mineral buildup.
| Appliance | In Kerman | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.1 yrs | 8.5 yrs | -40% |
| Washing Machine | 8.6 yrs | 12 yrs | -28% |
| Water Heater | 10.2 yrs | 15 yrs | -32% |
Regional Water Comparison
How Kerman compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Kerman, California | 136 mg/L | 5.9 ppt | 🟠 Hard | mixed |
| Madera, California | 67 mg/L | 3.9 ppt | 🟡 Moderately Hard | mixed |
| Fresno, California | 31 mg/L | 2.8 ppt | 🟢 Soft | mixed |
| Clovis, California | 36.5 mg/L | 3 ppt | 🟢 Soft | mixed |
| Chowchilla, California | 107.5 mg/L | 5.1 ppt | 🟡 Moderately Hard | mixed |
National Benchmark
How Kerman compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Kerman | 136 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Kerman's Water Unique?
Local geology and source profile
Kerman, California, in Fresno County — a Fresno County city adjacent to Fresno and Sanger in the central California San Joaquin Valley — receives its water from the Kerman Public Utility District (KPUD), drawing from the Kings River and local San Joaquin Valley groundwater (Fresno County) through the central Valley distribution.
The moderately hard 136 mg/L hardness and TDS of 377.4 mg/L (elevated TDS relative to hardness — reflecting the San Joaquin Valley alluvial aquifer's agricultural return flow mineral enrichment and evapotranspiration concentration) reflect the central California Valley supply's typical character — harder than the Sierra Nevada direct supply (Cherryland: 75 mg/L) due to the San Joaquin Valley alluvial aquifer contribution. The San Joaquin Valley groundwater at Fresno County is developed in Quaternary alluvial fan deposits (calcareous — primary hardness contributor), Tertiary Tulare Formation (calcareous), and Kings River Sierra Nevada granite dilution (insoluble).
At 136 mg/L, Kerman's water is moderately hard — scale builds in kettles and appliances over months, dishwashers benefit from rinse aid, and faucet aerators need periodic cleaning. Quarterly descaling is appropriate. The PFAS level of 5.9 ppt warrants a certified drinking water filter — Fresno Yosemite International Airport (Fresno County — AFFF) and the central Valley agricultural-industrial corridor contribute to Kerman's readings.
Geology & Source: Kerman in Fresno County draws from the Kerman Public Utility District on the Kings River and San Joaquin Valley groundwater (Fresno County, central California) — the Kings River drains the Sierra Nevada (insoluble Mesozoic granite) blended with Quaternary calcareous valley alluvial aquifer — California Fresno County Kings River-San Joaquin Valley Sierra Nevada-alluvial supply produces moderately hard water at 136 mg/L with TDS 377.4 mg/L.