Yorba Linda, CA water hardness

Tap water hardness
48mg/L
2.8gpg
Soft

Calculated from the utility's calcium and magnesium results · January 2025

CA typical
121 mg/L
EPA health violations since 2016
0
Data
Calculated from utility data

The water in Yorba Linda carries roughly 48 mg/L of dissolved calcium and magnesium, or 2.8 grains per gallon. That is soft water. TapWaterData worked it out from the calcium and magnesium levels the local utility reports (January 2025).

Yorba Linda on the hardness scale, with nearby cities
060120180240300360+CA typical 121Chino Hills: 81 mg/LChino Hills 81Orange: 117 mg/LOrange 117Diamond Bar: 153 mg/LDiamond Bar 153Rowland Heights: 160 mg/LRowland Heights 160La Habra: 168 mg/LLa Habra 168Fullerton: 175 mg/LFullerton 175Brea: 191 mg/LBrea 191North Tustin: 243 mg/LNorth Tustin 243Villa Park: 252 mg/LVilla Park 252Anaheim: 274 mg/LAnaheim 274Yorba Linda 48mg/L as calcium carbonate060120180240300360+CA 121Chino Hills: 81 mg/LChino Hills 81Diamond Bar: 153 mg/LDiamond Bar 153Brea: 191 mg/LBrea 191North Tustin: 243 mg/LNorth Tust. 243Villa Park: 252 mg/LVilla Park 252Anaheim: 274 mg/LAnaheim 27448 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Yorba Linda sits 73 mg/L below the typical California figure of 121. None of the 10 nearest cities we track has softer water. The range nearby runs from 81 mg/L in Chino Hills to 274 in Anaheim.

What 48 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 48 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 Yorba Linda's water system

Yorba Linda Water District · PWSID CA3010037

No health-based violations since 2016

Serves about 84,292 people from surface water.

Health-based
0
Monitoring or reporting
0
Open now
0

EPA lists this system as serving Yorba Linda.

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 Yorba Linda water hard?

No. It measures about 48 mg/L (2.8 grains per gallon), which the USGS classes as soft.

What is the water hardness in Yorba Linda in grains per gallon?

About 2.8 gpg. One grain per gallon equals 17.1 mg/L, so 48 mg/L divided by 17.1 gives 2.8.

Has the Yorba Linda water system had EPA violations?

EPA records show no health-based violations for Yorba Linda Water District since 2016.

Nearby cities

All 515 cities in California

Hardness data: TapWaterData US Water Hardness (calculated from utility data, January 24, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.