Hard water in Moberly, MO
Calculated from the utility's calcium and magnesium results · August 2021
- MO typical
- 121 mg/L
- EPA health violations since 2016
- 1
- Softener for 3 people
- 24k grain
- Data
- Calculated from utility data
Tap water in Moberly has about 135 mg/L of hardness, which is 7.9 grains per gallon. On the USGS scale that counts as hard. TapWaterData worked it out from the calcium and magnesium levels the local utility reports (August 2021).
At 135 mg/L, Moberly is 14 mg/L above the typical Missouri figure of 121. Of the 10 nearest cities we track, 3 have softer water and 7 have harder. The range nearby runs from 73 mg/L in Macon to 307 in Warrenton.
What 135 mg/L means at home
Expect white crust on faucets and showerheads, plus spots on dishes that come out of the dishwasher.
Kettles collect scale quickly. Water heaters build up sediment at the bottom of the tank, which makes them work harder over time.
Soap and detergent need a little more to lather, and soap scum shows up in the tub.
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 135 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 × 7.9 gpg = 1,780 grains a day. A 24,000-grain unit regenerates about every 13 days.
EPA record for Moberly's water system
1 health-based violation since 2016
Serves about 13,783 people from surface water.
- Health-based
- 1
- Monitoring or reporting
- 1
- Open now
- 1
EPA lists this system as serving Moberly.
| Contaminant or rule | Violations | Period | Status |
|---|---|---|---|
| Total trihalomethanes (TTHM)a disinfection byproduct | 1 | 2016 | 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 Moberly water hard?
Yes. It measures about 135 mg/L (7.9 grains per gallon), which the USGS classes as hard.
What is the water hardness in Moberly in grains per gallon?
About 7.9 gpg. One grain per gallon equals 17.1 mg/L, so 135 mg/L divided by 17.1 gives 7.9.
What size water softener do I need in Moberly?
For 3 people using 75 gallons each per day, 7.9 gpg works out to about 1,780 grains a day. A 24,000-grain softener covers that with a regeneration about every 13 days.
Has the Moberly water system had EPA violations?
EPA records show 1 health-based violation for Moberly PWS 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
- Macon73 mg/LModerately hard
- Columbia190 mg/LVery hard
- Marshall143 mg/LHard
- Fulton289 mg/LVery hard
- Kirksville133 mg/LHard
- Hannibal209 mg/LVery hard
- Jefferson City218 mg/LVery hard
- Chillicothe108 mg/LModerately hard
- Sedalia241 mg/LVery hard
- Warrenton307 mg/LVery hard
Hardness data: TapWaterData US Water Hardness (calculated from utility data, August 17, 2021), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.