Hard water in Bellbrook, OH

Tap water hardness
139mg/L
8.1gpg
Hard

Reported by Montgomery County Water Services 1 PWS · September 2025

OH typical
113 mg/L
EPA health violations since 2016
1
Softener for 3 people
24k grain
Data
Utility report

The water in Bellbrook carries roughly 139 mg/L of dissolved calcium and magnesium, or 8.1 grains per gallon. That is hard water. The number comes from Montgomery County Water Services 1 PWS, dated September 2025.

Bellbrook on the hardness scale, with nearby cities
060120180240300360+OH typical 113Centerville: 142 mg/LCenterville 142Miamisburg: 142 mg/LMiamisburg 142Kettering: 147 mg/LKettering 147West Carrollton: 147 mg/LWest Carrollton 147Moraine: 147 mg/LMoraine 147Dayton: 147 mg/LDayton 147Oakwood: 148 mg/LOakwood 148Beavercreek: 149 mg/LBeavercreek 149Riverside: 149 mg/LRiverside 149Xenia: 356 mg/LXenia 356Bellbrook 139mg/L as calcium carbonate060120180240300360+OH 113Centerville: 142 mg/LCenterville 142Kettering: 147 mg/LKettering 147West Carrollton: 147 mg/LWest Carro. 147Oakwood: 148 mg/LOakwood 148Beavercreek: 149 mg/LBeavercreek 149Xenia: 356 mg/LXenia 356139 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Bellbrook sits 26 mg/L above the typical Ohio figure of 113. None of the 10 nearest cities we track has softer water. The range nearby runs from 142 mg/L in Centerville to 356 in Xenia.

What 139 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 139 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.

Softener size for Bellbrook

3 people × 75 gallons a day × 8.1 gpg = 1,825 grains a day. A 24,000-grain unit regenerates about every 13 days.

Size it for your household

EPA record for Bellbrook's water system

Bellbrook Water Works · PWSID OH2901112

1 health-based violation since 2016

Serves about 9,475 people from groundwater.

Health-based
1
Monitoring or reporting
5
Open now
1

EPA lists Bellbrook Water Works as the system serving Bellbrook. The hardness figure above comes from a different system's report, which TapWaterData uses for Bellbrook.

20162017201820192020202120222023202420252026Lead and Copper Rule'16'18'20'22'24'26Lead and Copper Rule
Each dot is one health-based violation, placed at the start of its compliance period.
Contaminant or ruleViolationsPeriodStatus
Lead and Copper Rulecorrosion control and lead sampling12024Resolved

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 Bellbrook water hard?

Yes. It measures about 139 mg/L (8.1 grains per gallon), which the USGS classes as hard.

What is the water hardness in Bellbrook in grains per gallon?

About 8.1 gpg. One grain per gallon equals 17.1 mg/L, so 139 mg/L divided by 17.1 gives 8.1.

What size water softener do I need in Bellbrook?

For 3 people using 75 gallons each per day, 8.1 gpg works out to about 1,825 grains a day. A 24,000-grain softener covers that with a regeneration about every 13 days.

Has the Bellbrook water system had EPA violations?

EPA records show 1 health-based violation for Bellbrook Water Works since 2016, involving Lead and Copper Rule. There were also 5 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 108 cities in Ohio

Hardness data: TapWaterData US Water Hardness (utility report, September 16, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.