How hard is the water in Paramount, CA?

Tap water hardness
108mg/L
6.3gpg
Moderately hardReports range 108–160

Reported by Paramount - City, Water Dept. · 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 Paramount has about 108 mg/L of hardness, which is 6.3 grains per gallon. On the USGS scale that counts as moderately hard. The number comes from Paramount - City, Water Dept., dated March 2023. Reports for this system disagree, with values from 108 to 160 mg/L.

Paramount on the hardness scale, with nearby cities
060120180240300360+CA typical 121Bellflower: 119 mg/LBellflower 119Willowbrook: 121 mg/LWillowbrook 121Artesia: 126 mg/LArtesia 126Norwalk: 136 mg/LNorwalk 136Lynwood: 171 mg/LLynwood 171Bell Gardens: 171 mg/LBell Gardens 171Lakewood: 177 mg/LLakewood 177West Rancho Dominguez: 185 mg/LWest Rancho Dominguez 185South Gate: 217 mg/LSouth Gate 217Downey: 247 mg/LDowney 247Paramount 108mg/L as calcium carbonate060120180240300360+CA 121Bellflower: 119 mg/LBellflower 119Willowbrook: 121 mg/LWillowbrook 121Lynwood: 171 mg/LLynwood 171Lakewood: 177 mg/LLakewood 177South Gate: 217 mg/LSouth Gate 217Downey: 247 mg/LDowney 247108 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 108 mg/L, Paramount is 13 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 119 mg/L in Bellflower to 247 in Downey.

What 108 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 Paramount

3 people × 75 gallons a day × 6.3 gpg = 1,422 grains a day. A 24,000-grain unit regenerates about every 16 days.

Size it for your household

EPA record for Paramount's water system

Paramount - City, Water Dept. · PWSID CA1910105

No health-based violations since 2016

Serves about 55,200 people from surface water.

Health-based
0
Monitoring or reporting
1
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 Paramount water hard?

Somewhat. It measures about 108 mg/L (6.3 grains per gallon), which the USGS classes as moderately hard.

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

About 6.3 gpg. One grain per gallon equals 17.1 mg/L, so 108 mg/L divided by 17.1 gives 6.3.

What size water softener do I need in Paramount?

For 3 people using 75 gallons each per day, 6.3 gpg works out to about 1,422 grains a day. A 24,000-grain softener covers that with a regeneration about every 16 days.

Has the Paramount water system had EPA violations?

EPA records show no health-based violations for Paramount - City, Water Dept. since 2016. There were also 1 monitoring or reporting violation, which are about late or missing tests and notices.

Nearby cities

All 515 cities in California

Hardness data: TapWaterData US Water Hardness (utility report, March 6, 2023), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.