How hard is the water in Marysville, CA?

Tap water hardness
98mg/L
5.7gpg
Moderately hard

Reported by Cal-Water Service CO.-Marysville · March 2023

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

Tap water in Marysville has about 98 mg/L of hardness, which is 5.7 grains per gallon. On the USGS scale that counts as moderately hard. The number comes from Cal-Water Service CO.-Marysville, dated March 2023.

Marysville on the hardness scale, with nearby cities
060120180240300360+CA typical 121Rocklin: 11 mg/LRocklin 11North Auburn: 12 mg/LNorth Auburn 12Grass Valley: 13 mg/LGrass Valley 13Lincoln: 15 mg/LLincoln 15Alta Sierra: 16 mg/LAlta Sierra 16Roseville: 19 mg/LRoseville 19Oroville: 24 mg/LOroville 24Colusa: 33 mg/LColusa 33Plumas Lake: 197 mg/LPlumas Lake 197Yuba City: 247 mg/LYuba City 247Marysville 98mg/L as calcium carbonate060120180240300360+CA 121Lincoln: 15 mg/LLincoln 15Alta Sierra: 16 mg/LAlta Sierra 16Oroville: 24 mg/LOroville 24Colusa: 33 mg/LColusa 33Plumas Lake: 197 mg/LPlumas Lake 197Yuba City: 247 mg/LYuba City 24798 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Marysville sits 23 mg/L below the typical California figure of 121. Of the 10 nearest cities we track, 8 have softer water and 2 have harder. The range nearby runs from 11 mg/L in Rocklin to 247 in Yuba City.

What 98 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 Marysville

3 people × 75 gallons a day × 5.7 gpg = 1,287 grains a day. A 24,000-grain unit regenerates about every 18 days.

Size it for your household

EPA record for Marysville's water system

Cal-Water Service CO.-Marysville · PWSID CA5810001

No health-based violations since 2016

Serves about 12,888 people from groundwater.

Health-based
0
Monitoring or reporting
0
Open now
0

TapWaterData ties Marysville to this system. EPA's service-area records do not name Marysville, 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 Marysville water hard?

Somewhat. It measures about 98 mg/L (5.7 grains per gallon), which the USGS classes as moderately hard.

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

About 5.7 gpg. One grain per gallon equals 17.1 mg/L, so 98 mg/L divided by 17.1 gives 5.7.

What size water softener do I need in Marysville?

For 3 people using 75 gallons each per day, 5.7 gpg works out to about 1,287 grains a day. A 24,000-grain softener covers that with a regeneration about every 18 days.

Has the Marysville water system had EPA violations?

EPA records show no health-based violations for Cal-Water Service CO.-Marysville since 2016.

Nearby cities

All 515 cities in California

Hardness data: TapWaterData US Water Hardness (utility report, March 8, 2023), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.