Rancho Cordova, CA water hardness

Tap water hardness
28mg/L
1.6gpg
SoftReports range 28–38

Reported by Folsom, City of - Main · June 2025

CA typical
121 mg/L
EPA health violations since 2016
0
Data
Utility report

Rancho Cordova water measures 28 mg/L (1.6 gpg) of hardness, soft by USGS standards. The number comes from Folsom, City of - Main, dated June 2025. Reports for this system disagree, with values from 28 to 38 mg/L.

Rancho Cordova on the hardness scale, with nearby cities
060120180240300360+CA typical 121Folsom: 18 mg/LFolsom 18Gold River: 30 mg/LGold River 30Rosemont: 38 mg/LRosemont 38Orangevale: 45 mg/LOrangevale 45Fair Oaks: 53 mg/LFair Oaks 53Vineyard: 53 mg/LVineyard 53Carmichael: 74 mg/LCarmichael 74Citrus Heights: 82 mg/LCitrus Heights 82La Riviera: 85 mg/LLa Riviera 85Arden-Arcade: 98 mg/LArden-Arcade 98Rancho Cordova 28mg/L as calcium carbonate060120180240300360+CA 121Gold River: 30 mg/LGold River 30Rosemont: 38 mg/LRosemont 38Orangevale: 45 mg/LOrangevale 45Fair Oaks: 53 mg/LFair Oaks 53Carmichael: 74 mg/LCarmichael 74La Riviera: 85 mg/LLa Riviera 8528 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Rancho Cordova sits 93 mg/L below the typical California figure of 121. Of the 10 nearest cities we track, 1 has softer water and 9 have harder. The range nearby runs from 18 mg/L in Folsom to 98 in Arden-Arcade.

What 28 mg/L means at home

Soap and shampoo lather with very little product. Kettles and showerheads stay mostly free of white crust.

Some people notice that soap feels slow to rinse off in soft water. That slippery feel is normal and harmless.

Hardness is not a health problem, and EPA sets no limit for it. It is a matter of scale and soap.

What to do about it

Nothing, as far as hardness goes. At 28 mg/L a softener would have almost nothing to remove.

Carbon filter

If the water tastes of chlorine, a pitcher or faucet carbon filter takes care of that. It does not change hardness.

EPA record for Rancho Cordova's water system

Folsom, City of - Main · PWSID CA3410014

No health-based violations since 2016

Serves about 80,969 people from surface water.

Health-based
0
Monitoring or reporting
0
Open now
0

TapWaterData ties Rancho Cordova to this system. EPA's service-area records do not name Rancho Cordova, so check the utility printed on your water bill.

Health-based means a contaminant above its legal limit or a missed treatment step. Monitoring and reporting violations are late or missing tests and notices. Source: EPA ECHO, 2026Q3 export, violations with periods starting 2016 or later. Full EPA record.

Questions

Is Rancho Cordova water hard?

No. It measures about 28 mg/L (1.6 grains per gallon), which the USGS classes as soft.

What is the water hardness in Rancho Cordova in grains per gallon?

About 1.6 gpg. One grain per gallon equals 17.1 mg/L, so 28 mg/L divided by 17.1 gives 1.6.

Has the Rancho Cordova water system had EPA violations?

EPA records show no health-based violations for Folsom, City of - Main since 2016.

Nearby cities

All 515 cities in California

Hardness data: TapWaterData US Water Hardness (utility report, June 30, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.