Hard water in Sedalia, MO
Calculated from the utility's calcium and magnesium results · December 2020
- MO typical
- 121 mg/L
- EPA health violations since 2016
- 0
- Softener for 3 people
- 24k grain
- Data
- Calculated from utility data
Tap water in Sedalia has about 241 mg/L of hardness, which is 14.1 grains per gallon. On the USGS scale that counts as very hard. TapWaterData worked it out from the calcium and magnesium levels the local utility reports (December 2020).
At 241 mg/L, Sedalia is 120 mg/L above the typical Missouri figure of 121. Of the 10 nearest cities we track, 9 have softer water and 1 has harder. The range nearby runs from 97 mg/L in Lee's Summit to 310 in Blue Springs.
What 241 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 241 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 × 14.1 gpg = 3,172 grains a day. A 24,000-grain unit regenerates about every 7 days.
EPA record for Sedalia's water system
No health-based violations since 2016
Serves about 21,725 people from groundwater.
- Health-based
- 0
- Monitoring or reporting
- 3
- Open now
- 1
EPA lists this system as serving Sedalia.
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 Sedalia water hard?
Yes. It measures about 241 mg/L (14.1 grains per gallon), which the USGS classes as very hard.
What is the water hardness in Sedalia in grains per gallon?
About 14.1 gpg. One grain per gallon equals 17.1 mg/L, so 241 mg/L divided by 17.1 gives 14.1.
What size water softener do I need in Sedalia?
For 3 people using 75 gallons each per day, 14.1 gpg works out to about 3,172 grains a day. A 24,000-grain softener covers that with a regeneration about every 7 days.
Has the Sedalia water system had EPA violations?
EPA records show no health-based violations for Sedalia PWS since 2016. There were also 3 monitoring or reporting violations, which are about late or missing tests and notices.
Nearby cities
- Warrensburg233 mg/LVery hard
- Marshall143 mg/LHard
- Clinton146 mg/LHard
- Columbia190 mg/LVery hard
- Oak Grove176 mg/LHard
- Richmond190 mg/LVery hard
- Jefferson City218 mg/LVery hard
- Blue Springs310 mg/LVery hard
- Harrisonville121 mg/LHard
- Lee's Summit97 mg/LModerately hard
Hardness data: TapWaterData US Water Hardness (calculated from utility data, December 15, 2020), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.