How hard is the water in Hemet, CA?

Tap water hardness
120mg/L
7.0gpg
Moderately hard

Reported by Eastern Municipal WD · September 2025

CA typical
121 mg/L
EPA health violations since 2016
0
Softener for 3 people
24k grain
Data
Utility report

Hemet water measures 120 mg/L (7.0 gpg) of hardness, moderately hard by USGS standards. The number comes from Eastern Municipal WD, dated September 2025.

Hemet on the hardness scale, with nearby cities
060120180240300360+CA typical 121Canyon Lake: 118 mg/LCanyon Lake 118East Hemet: 120 mg/LEast Hemet 120San Jacinto: 120 mg/LSan Jacinto 120Valle Vista: 120 mg/LValle Vista 120Homeland: 120 mg/LHomeland 120Nuevo: 120 mg/LNuevo 120Menifee: 120 mg/LMenifee 120French Valley: 120 mg/LFrench Valley 120Perris: 120 mg/LPerris 120Beaumont: 123 mg/LBeaumont 123Hemet 120mg/L as calcium carbonate060120180240300360+CA 121East Hemet: 120 mg/LEast Hemet 120San Jacinto: 120 mg/LSan Jacinto 120Valle Vista: 120 mg/LValle Vista 120Homeland: 120 mg/LHomeland 120Nuevo: 120 mg/LNuevo 120Beaumont: 123 mg/LBeaumont 123120 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Hemet sits close to the typical California figure of 121 mg/L. Of the 10 nearest cities we track, 1 has softer water and 1 has harder. The range nearby runs from 118 mg/L in Canyon Lake to 123 in Beaumont.

What 120 mg/L means at home

You may see faint white spots on glasses and shower doors after the water dries.

Scale builds up slowly. A kettle or coffee maker needs descaling now and then, maybe every few months.

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

Optional. Plenty of households at this level live with it and descale the kettle now and then.

Water softener

Worth a look if spots on glass bother you, or if your tankless water heater manual asks for softer water.

Carbon filter

Improves taste and removes chlorine. It leaves calcium and magnesium in place.

Softener size for Hemet

3 people × 75 gallons a day × 7.0 gpg = 1,580 grains a day. A 24,000-grain unit regenerates about every 15 days.

Size it for your household

EPA record for Hemet's water system

Hemet, City of · PWSID CA3310016

No health-based violations since 2016

Serves about 33,591 people from surface water.

Health-based
0
Monitoring or reporting
2
Open now
0

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

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 Hemet water hard?

Somewhat. It measures about 120 mg/L (7.0 grains per gallon), which the USGS classes as moderately hard.

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

About 7.0 gpg. One grain per gallon equals 17.1 mg/L, so 120 mg/L divided by 17.1 gives 7.0.

What size water softener do I need in Hemet?

For 3 people using 75 gallons each per day, 7.0 gpg works out to about 1,580 grains a day. A 24,000-grain softener covers that with a regeneration about every 15 days.

Has the Hemet water system had EPA violations?

EPA records show no health-based violations for Hemet, City of 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, September 4, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.