Crestline, CA water hardness

Tap water hardness
51mg/L
3.0gpg
SoftReports range 51–65

Reported by Crestline Village CWD - Division 10 · December 2024

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

Tap water in Crestline has about 51 mg/L of hardness, which is 3.0 grains per gallon. On the USGS scale that counts as soft. The number comes from Crestline Village CWD - Division 10, dated December 2024. Reports for this system disagree, with values from 51 to 65 mg/L.

Crestline on the hardness scale, with nearby cities
060120180240300360+CA typical 121Running Springs: 36 mg/LRunning Springs 36Lake Arrowhead: 56 mg/LLake Arrowhead 56Muscoy: 72 mg/LMuscoy 72San Bernardino: 79 mg/LSan Bernardino 79Rialto: 89 mg/LRialto 89Fontana: 92 mg/LFontana 92Loma Linda: 99 mg/LLoma Linda 99Hesperia: 108 mg/LHesperia 108Highland: 123 mg/LHighland 123Colton: 139 mg/LColton 139Crestline 51mg/L as calcium carbonate060120180240300360+CA 121Running Springs: 36 mg/LRunning Sp. 36Lake Arrowhead: 56 mg/LLake Arrow. 56Muscoy: 72 mg/LMuscoy 72San Bernardino: 79 mg/LSan Bernar. 79Rialto: 89 mg/LRialto 89Hesperia: 108 mg/LHesperia 10851 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

At 51 mg/L, Crestline is 70 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 36 mg/L in Running Springs to 139 in Colton.

What 51 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 51 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 Crestline's water system

Crestline Village CWD - Division 10 · PWSID CA3610015

No health-based violations since 2016

Serves about 11,650 people from surface water.

Health-based
0
Monitoring or reporting
2
Open now
0

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 Crestline water hard?

No. It measures about 51 mg/L (3.0 grains per gallon), which the USGS classes as soft.

What is the water hardness in Crestline in grains per gallon?

About 3.0 gpg. One grain per gallon equals 17.1 mg/L, so 51 mg/L divided by 17.1 gives 3.0.

Has the Crestline water system had EPA violations?

EPA records show no health-based violations for Crestline Village CWD - Division 10 since 2016. There were also 2 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 515 cities in California

Hardness data: TapWaterData US Water Hardness (utility report, December 11, 2024), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.