Rancho Cordova Water Hardness & Quality Report (2026)
Water Hardness
7.2 grains per gallon
Source
mixed
pH Level
7.8
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
329.1 mg/L
Est. Daily Cost
$0.33
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 Rancho Cordova, your appliances are currently losing 16% efficiency due to mineral buildup.
| Appliance | In Rancho Cordova | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.6 yrs | 8.5 yrs | -34% |
| Washing Machine | 9.1 yrs | 12 yrs | -24% |
| Water Heater | 10.7 yrs | 15 yrs | -29% |
Regional Water Comparison
How Rancho Cordova compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Rancho Cordova, California | 122.5 mg/L | 5.5 ppt | 🟠 Hard | mixed |
| Carmichael, California | 122.5 mg/L | 5.5 ppt | 🟠 Hard | mixed |
| Fair Oaks, California | 125.5 mg/L | 5.6 ppt | 🟠 Hard | mixed |
| Rosemont, California | 144.5 mg/L | 6.2 ppt | 🟠 Hard | mixed |
| Arden-Arcade, California | 58 mg/L | 3.7 ppt | 🟢 Soft | mixed |
National Benchmark
How Rancho Cordova compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Rancho Cordova | 122.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Rancho Cordova's Water Unique?
Local geology and source profile
Rancho Cordova, California, in Sacramento County east of Sacramento on the American River (a rapidly growing city that incorporated in 2003, previously an unincorporated Sacramento County community and home of Aerojet), draws its municipal water supply through the City of Rancho Cordova Water Services Division and Sacramento County Water Agency (SCWA), sourcing from American River (treated surface water from Folsom Lake) delivered by the Sacramento Regional County Sanitation District and SCWA, and from local Sacramento Valley alluvial groundwater wells in the eastern Sacramento County area. Water hardness in Rancho Cordova measures 122.5 mg/L — classified as moderately hard.
Rancho Cordova's moderate hardness reflects the Sacramento Valley supply blend. The American River at Folsom Lake (El Dorado and Placer Counties) originates in the Sierra Nevada (Cretaceous granodiorite of the Eldorado National Forest — very soft), but surface water delivery through the SCWA infrastructure and blending with local alluvial groundwater raises finished hardness. Local Sacramento Valley alluvial groundwater in the eastern Sacramento County area (the American River alluvial fan and the Pleistocene Riverbank Formation deposits near Rancho Cordova) contains moderate dissolved minerals from the calcareous cemented alluvial sediments and the Great Valley Sequence marine sediment parent material.
At 122.5 mg/L, Rancho Cordova residents encounter moderate scale accumulation. Faucet aerators and showerheads develop deposits after several months — monthly cleaning with citric acid solution is practical maintenance. Sacramento County Water Agency and City of Rancho Cordova Water Services consistently deliver water meeting all California SWRCB and EPA Safe Drinking Water Act requirements.
Geology & Source: Mixed supply from Sacramento River (Folsom Lake, American River) via the Sacramento County Water Agency (SCWA) or the City of Rancho Cordova Water Services Division and local Sacramento Valley alluvial groundwater — the Sierra Nevada granodiorite American River source and the Great Valley Sequence alluvial fan; moderately hard supply at 122.5 mg/L in Sacramento County.