Caruthersville, MO water hardness
Calculated from the utility's calcium and magnesium results · December 2020
- MO typical
- 121 mg/L
- EPA health violations since 2016
- 0
- Data
- Calculated from utility data
The water in Caruthersville carries roughly 21 mg/L of dissolved calcium and magnesium, or 1.2 grains per gallon. That is soft water. TapWaterData worked it out from the calcium and magnesium levels the local utility reports (December 2020).
At 21 mg/L, Caruthersville is 100 mg/L below the typical Missouri figure of 121. None of the 10 nearest cities we track has softer water. The range nearby runs from 57 mg/L in Kennett to 565 in Park Hills.
What 21 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 21 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 Caruthersville's water system
No health-based violations since 2016
Serves about 5,518 people from groundwater.
- Health-based
- 0
- Monitoring or reporting
- 4
- Open now
- 1
EPA lists this system as serving Caruthersville.
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 Caruthersville water hard?
No. It measures about 21 mg/L (1.2 grains per gallon), which the USGS classes as soft.
What is the water hardness in Caruthersville in grains per gallon?
About 1.2 gpg. One grain per gallon equals 17.1 mg/L, so 21 mg/L divided by 17.1 gives 1.2.
Has the Caruthersville water system had EPA violations?
EPA records show no health-based violations for Caruthersville PWS since 2016. There were also 4 monitoring or reporting violations, which are about late or missing tests and notices.
Nearby cities
- Kennett57 mg/LSoft
- Sikeston163 mg/LHard
- Poplar Bluff165 mg/LHard
- Cape Girardeau237 mg/LVery hard
- Jackson268 mg/LVery hard
- Farmington276 mg/LVery hard
- Park Hills565 mg/LVery hard
- West Plains248 mg/LVery hard
- Bonne Terre339 mg/LVery hard
- De Soto312 mg/LVery hard
Hardness data: TapWaterData US Water Hardness (calculated from utility data, December 7, 2020), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.