How hard is the water in Carson City, NV?

Tap water hardness
120mg/L
7.0gpg
Moderately hardReports range 79–120

Reported by Carson City Public Works · October 2025

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

Carson City water measures 120 mg/L (7.0 gpg) of hardness, moderately hard by USGS standards. The number comes from Carson City Public Works, dated October 2025. Reports for this system disagree, with values from 79 to 120 mg/L.

Carson City on the hardness scale, with nearby cities
060120180240300360+NV typical 232Incline Village: 10 mg/LIncline Village 10Silver Springs: 48 mg/LSilver Springs 48Indian Hills: 87 mg/LIndian Hills 87Gardnerville Ranchos: 97 mg/LGardnerville Ranchos 97Reno: 102 mg/LReno 102Sparks: 102 mg/LSparks 102Sun Valley: 102 mg/LSun Valley 102Spanish Springs: 102 mg/LSpanish Springs 102Gardnerville: 174 mg/LGardnerville 174Dayton: 234 mg/LDayton 234Carson City 120mg/L as calcium carbonate060120180240300360+NV 232Incline Village: 10 mg/LIncline Vi. 10Indian Hills: 87 mg/LIndian Hil. 87Gardnerville Ranchos: 97 mg/LGardnervil. 97Reno: 102 mg/LReno 102Gardnerville: 174 mg/LGardnervil. 174Dayton: 234 mg/LDayton 234120 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 120 mg/L, Carson City is 112 mg/L below the typical Nevada figure of 232. Of the 10 nearest cities we track, 8 have softer water and 2 have harder. The range nearby runs from 10 mg/L in Incline Village to 234 in Dayton.

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 Carson City

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 Carson City's water system

Carson City Public Works · PWSID NV0000015

No health-based violations since 2016

Serves about 59,000 people from surface water.

Health-based
0
Monitoring or reporting
5
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 Carson City 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 Carson City 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 Carson City?

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 Carson City water system had EPA violations?

EPA records show no health-based violations for Carson City Public Works since 2016. There were also 5 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 19 cities in Nevada

Hardness data: TapWaterData US Water Hardness (utility report, October 12, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.