Hard water in Mountain Home, AR
Calculated from the utility's calcium and magnesium results · November 2024
- AR typical
- 39 mg/L
- Softener for 3 people
- 24k grain
- Data
- Calculated from utility data
The water in Mountain Home carries roughly 162 mg/L of dissolved calcium and magnesium, or 9.5 grains per gallon. That is hard water. TapWaterData worked it out from the calcium and magnesium levels the local utility reports (November 2024).
At 162 mg/L, Mountain Home is 123 mg/L above the typical Arkansas figure of 39. None of the 10 nearest cities we track has harder water. The range nearby runs from 11 mg/L in Morrilton to 157 in Harrison.
What 162 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 162 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 × 9.5 gpg = 2,128 grains a day. A 24,000-grain unit regenerates about every 11 days.
EPA record for Mountain Home's water system
We could not match Mountain Home to a community water system in EPA's records. Your water bill or the yearly Consumer Confidence Report names the system and its ID.
Questions
Is Mountain Home water hard?
Yes. It measures about 162 mg/L (9.5 grains per gallon), which the USGS classes as hard.
What is the water hardness in Mountain Home in grains per gallon?
About 9.5 gpg. One grain per gallon equals 17.1 mg/L, so 162 mg/L divided by 17.1 gives 9.5.
What size water softener do I need in Mountain Home?
For 3 people using 75 gallons each per day, 9.5 gpg works out to about 2,128 grains a day. A 24,000-grain softener covers that with a regeneration about every 11 days.
Nearby cities
- Harrison157 mg/LHard
- Batesville135 mg/LHard
- Heber Springs17 mg/LSoft
- Berryville65 mg/LModerately hard
- Searcy29 mg/LSoft
- Morrilton11 mg/LSoft
- Clarksville31 mg/LSoft
- Conway24 mg/LSoft
- Ward12 mg/LSoft
- Cabot28 mg/LSoft
Hardness data: TapWaterData US Water Hardness (calculated from utility data, November 4, 2024), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.