La Crescenta-Montrose, CA water hardness
Reported by La Canada Irrigation Dist. · October 2025
- CA typical
- 121 mg/L
- EPA health violations since 2016
- 0
- Data
- Utility report
La Crescenta-Montrose water measures 3 mg/L (0.2 gpg) of hardness, soft by USGS standards. The number comes from La Canada Irrigation Dist., dated October 2025.
La Crescenta-Montrose sits 118 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 86 mg/L in Glendale to 234 in Altadena.
What 3 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 3 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 La Crescenta-Montrose's water system
No health-based violations since 2016
Serves about 9,258 people from surface water.
- Health-based
- 0
- Monitoring or reporting
- 0
- Open now
- 0
TapWaterData ties La Crescenta-Montrose to this system. EPA's service-area records do not name La Crescenta-Montrose, 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 La Crescenta-Montrose water hard?
No. It measures about 3 mg/L (0.2 grains per gallon), which the USGS classes as soft.
What is the water hardness in La Crescenta-Montrose in grains per gallon?
About 0.2 gpg. One grain per gallon equals 17.1 mg/L, so 3 mg/L divided by 17.1 gives 0.2.
Has the La Crescenta-Montrose water system had EPA violations?
EPA records show no health-based violations for La Canada Irrigation Dist. since 2016.
Nearby cities
- La Cañada Flintridge218 mg/LVery hard
- Glendale86 mg/LModerately hard
- Burbank133 mg/LHard
- Altadena234 mg/LVery hard
- Pasadena230 mg/LVery hard
- South Pasadena128 mg/LHard
- San Marino116 mg/LModerately hard
- East Pasadena192 mg/LVery hard
- Sierra Madre161 mg/LHard
- Alhambra137 mg/LHard
Hardness data: TapWaterData US Water Hardness (utility report, October 13, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.