Hard water in West Plains, MO
Calculated from the utility's calcium and magnesium results · December 2020
- MO typical
- 121 mg/L
- EPA health violations since 2016
- 3
- Softener for 3 people
- 24k grain
- Data
- Calculated from utility data
West Plains water measures 248 mg/L (14.5 gpg) of hardness, very hard by USGS standards. TapWaterData worked it out from the calcium and magnesium levels the local utility reports (December 2020).
West Plains sits 127 mg/L above the typical Missouri figure of 121. Of the 10 nearest cities we track, 7 have softer water and 3 have harder. The range nearby runs from 120 mg/L in Springfield to 296 in Marshfield.
What 248 mg/L means at home
Scale forms fast here. Kettles and coffee makers need regular descaling, and showerheads clog unless you clean them.
Tank water heaters collect mineral sediment that insulates the water from the burner, so flushing the tank matters more than usual.
Dishes and glass shower doors spot easily. Soap scum and a dull film on hair or laundry are common complaints.
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
At 248 mg/L most of the trouble is scale, and only a few things deal with it.
Ion-exchange water softener
The standard whole-house fix. It swaps calcium and magnesium for sodium or potassium and needs salt plus a drain. Size it with the calculator below.
Salt-free conditioner
No salt and no drain line. It changes how minerals form scale instead of removing them, so water still tests hard.
Reverse osmosis or carbon filter
Under-sink reverse osmosis removes minerals from drinking water only. Plain carbon filters improve taste but do not soften.
3 people × 75 gallons a day × 14.5 gpg = 3,262 grains a day. A 24,000-grain unit regenerates about every 7 days.
EPA record for West Plains's water system
3 health-based violations since 2016
Serves about 12,864 people from surface water.
- Health-based
- 3
- Monitoring or reporting
- 1
- Open now
- 0
EPA lists this system as serving West Plains.
| Contaminant or rule | Violations | Period | Status |
|---|---|---|---|
| Surface Water Treatment Rulefiltration and disinfection | 3 | 2017–2023 | Resolved |
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 West Plains water hard?
Yes. It measures about 248 mg/L (14.5 grains per gallon), which the USGS classes as very hard.
What is the water hardness in West Plains in grains per gallon?
About 14.5 gpg. One grain per gallon equals 17.1 mg/L, so 248 mg/L divided by 17.1 gives 14.5.
What size water softener do I need in West Plains?
For 3 people using 75 gallons each per day, 14.5 gpg works out to about 3,262 grains a day. A 24,000-grain softener covers that with a regeneration about every 7 days.
Has the West Plains water system had EPA violations?
EPA records show 3 health-based violations for West Plains PWS since 2016, involving Surface Water Treatment Rule. There were also 1 monitoring or reporting violation, which are about late or missing tests and notices.
Nearby cities
- Marshfield296 mg/LVery hard
- Fort Leonard Wood216 mg/LVery hard
- Waynesville265 mg/LVery hard
- Ozark178 mg/LHard
- Lebanon210 mg/LVery hard
- Branson198 mg/LVery hard
- Poplar Bluff165 mg/LHard
- Nixa231 mg/LVery hard
- Rolla272 mg/LVery hard
- Springfield120 mg/LModerately hard
Hardness data: TapWaterData US Water Hardness (calculated from utility data, December 9, 2020), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.