Morgan Hill, CA water hardness

Tap water hardness
49mg/L
2.9gpg
Soft

Reported by Santa Clara Valley Water District · October 2025

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

The water in Morgan Hill carries roughly 49 mg/L of dissolved calcium and magnesium, or 2.9 grains per gallon. That is soft water. The number comes from Santa Clara Valley Water District, dated October 2025.

Morgan Hill on the hardness scale, with nearby cities
060120180240300360+CA typical 121Aptos: 98 mg/LAptos 98Rio del Mar: 98 mg/LRio del Mar 98Gilroy: 113 mg/LGilroy 113Soquel: 132 mg/LSoquel 132Los Gatos: 178 mg/LLos Gatos 178Alum Rock: 178 mg/LAlum Rock 178East Foothills: 178 mg/LEast Foothills 178San Jose: 185 mg/LSan Jose 185Interlaken: 215 mg/LInterlaken 215Watsonville: 215 mg/LWatsonville 215Morgan Hill 49mg/L as calcium carbonate060120180240300360+CA 121Aptos: 98 mg/LAptos 98Rio del Mar: 98 mg/LRio del Mar 98Gilroy: 113 mg/LGilroy 113San Jose: 185 mg/LSan Jose 185Interlaken: 215 mg/LInterlaken 215Watsonville: 215 mg/LWatsonville 21549 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Morgan Hill sits 72 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 98 mg/L in Aptos to 215 in Interlaken.

What 49 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 49 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 Morgan Hill's water system

City of Morgan Hill · PWSID CA4310006

No health-based violations since 2016

Serves about 47,374 people from groundwater.

Health-based
0
Monitoring or reporting
0
Open now
0

EPA lists City of Morgan Hill as the system serving Morgan Hill. The hardness figure above comes from a different system's report, which TapWaterData uses for Morgan Hill.

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 Morgan Hill water hard?

No. It measures about 49 mg/L (2.9 grains per gallon), which the USGS classes as soft.

What is the water hardness in Morgan Hill in grains per gallon?

About 2.9 gpg. One grain per gallon equals 17.1 mg/L, so 49 mg/L divided by 17.1 gives 2.9.

Has the Morgan Hill water system had EPA violations?

EPA records show no health-based violations for City of Morgan Hill since 2016.

Nearby cities

All 515 cities in California

Hardness data: TapWaterData US Water Hardness (utility report, October 7, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.