Hanford, CA water hardness

Tap water hardness
11mg/L
0.6gpg
Soft

Reported by Hanford, City of · April 2023

CA typical
121 mg/L
EPA health violations since 2016
4
Data
Utility report

Tap water in Hanford has about 11 mg/L of hardness, which is 0.6 grains per gallon. On the USGS scale that counts as soft. The number comes from Hanford, City of, dated April 2023.

Hanford on the hardness scale, with nearby cities
060120180240300360+CA typical 121Lemoore: 26 mg/LLemoore 26Tulare: 37 mg/LTulare 37Corcoran: 64 mg/LCorcoran 64Visalia: 74 mg/LVisalia 74Kingsburg: 91 mg/LKingsburg 91Dinuba: 92 mg/LDinuba 92Lemoore Station: 100 mg/LLemoore Station 100Orosi: 170 mg/LOrosi 170Selma: 202 mg/LSelma 202Reedley: 202 mg/LReedley 202Hanford 11mg/L as calcium carbonate060120180240300360+CA 121Lemoore: 26 mg/LLemoore 26Corcoran: 64 mg/LCorcoran 64Visalia: 74 mg/LVisalia 74Kingsburg: 91 mg/LKingsburg 91Lemoore Station: 100 mg/LLemoore St. 100Selma: 202 mg/LSelma 20211 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Hanford sits 110 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 26 mg/L in Lemoore to 202 in Selma.

What 11 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 11 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 Hanford's water system

Hanford, City of · PWSID CA1610003

4 health-based violations since 2016

Serves about 62,127 people from groundwater.

Health-based
4
Monitoring or reporting
1
Open now
0
20162017201820192020202120222023202420252026Total trihalomethanes (TTHM)'16'18'20'22'24'26Total trihalomethanes (TTHM)
Each dot is one health-based violation, placed at the start of its compliance period.
Contaminant or ruleViolationsPeriodStatus
Total trihalomethanes (TTHM)a disinfection byproduct42020–2021Resolved

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 Hanford water hard?

No. It measures about 11 mg/L (0.6 grains per gallon), which the USGS classes as soft.

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

About 0.6 gpg. One grain per gallon equals 17.1 mg/L, so 11 mg/L divided by 17.1 gives 0.6.

Has the Hanford water system had EPA violations?

EPA records show 4 health-based violations for Hanford, City of since 2016, involving Total trihalomethanes (TTHM). 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, April 6, 2023), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.