Fort Irwin, CA water hardness

Tap water hardness
24mg/L
1.4gpg
SoftReports range 3–24

Reported by Us Army Fort Irwin · June 2025

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

The water in Fort Irwin carries roughly 24 mg/L of dissolved calcium and magnesium, or 1.4 grains per gallon. That is soft water. The number comes from Us Army Fort Irwin, dated June 2025. Reports for this system disagree, with values from 3 to 24 mg/L.

Fort Irwin on the hardness scale, with nearby cities
060120180240300360+CA typical 121Running Springs: 36 mg/LRunning Springs 36Lucerne Valley: 53 mg/LLucerne Valley 53Lake Arrowhead: 56 mg/LLake Arrowhead 56California City: 73 mg/LCalifornia City 73Barstow: 80 mg/LBarstow 80Hesperia: 108 mg/LHesperia 108Adelanto: 111 mg/LAdelanto 111Big Bear City: 161 mg/LBig Bear City 161Big Bear Lake: 173 mg/LBig Bear Lake 173Apple Valley: 205 mg/LApple Valley 205Fort Irwin 24mg/L as calcium carbonate060120180240300360+CA 121Lucerne Valley: 53 mg/LLucerne Va. 53California City: 73 mg/LCalifornia. 73Barstow: 80 mg/LBarstow 80Hesperia: 108 mg/LHesperia 108Adelanto: 111 mg/LAdelanto 111Apple Valley: 205 mg/LApple Vall. 20524 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Fort Irwin sits 97 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 36 mg/L in Running Springs to 205 in Apple Valley.

What 24 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 24 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 Fort Irwin's water system

Us Army Fort Irwin · PWSID CA3610705

4 health-based violations since 2016

Serves about 7,800 people from groundwater.

Health-based
4
Monitoring or reporting
1
Open now
0
20162017201820192020202120222023202420252026FluorideArsenic'16'18'20'22'24'26FluorideArsenic
Each dot is one health-based violation, placed at the start of its compliance period.
Contaminant or ruleViolationsPeriodStatus
Fluoride22016Resolved
Arsenicnaturally occurring metal22016Resolved

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 Fort Irwin water hard?

No. It measures about 24 mg/L (1.4 grains per gallon), which the USGS classes as soft.

What is the water hardness in Fort Irwin in grains per gallon?

About 1.4 gpg. One grain per gallon equals 17.1 mg/L, so 24 mg/L divided by 17.1 gives 1.4.

Has the Fort Irwin water system had EPA violations?

EPA records show 4 health-based violations for Us Army Fort Irwin since 2016, involving Fluoride, Arsenic. 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, June 9, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.