Hard water in Lebanon, MO

Tap water hardness
210mg/L
12.3gpg
Very hard

Calculated from the utility's calcium and magnesium results · July 2025

MO typical
121 mg/L
EPA health violations since 2016
4
Softener for 3 people
24k grain
Data
Calculated from utility data

Lebanon water measures 210 mg/L (12.3 gpg) of hardness, very hard by USGS standards. TapWaterData worked it out from the calcium and magnesium levels the local utility reports (July 2025).

Lebanon on the hardness scale, with nearby cities
060120180240300360+MO typical 121Springfield: 120 mg/LSpringfield 120Willard: 153 mg/LWillard 153Republic: 155 mg/LRepublic 155Ozark: 178 mg/LOzark 178Battlefield: 190 mg/LBattlefield 190Fort Leonard Wood: 216 mg/LFort Leonard Wood 216Nixa: 231 mg/LNixa 231Waynesville: 265 mg/LWaynesville 265Rolla: 272 mg/LRolla 272Marshfield: 296 mg/LMarshfield 296Lebanon 210mg/L as calcium carbonate060120180240300360+MO 121Springfield: 120 mg/LSpringfield 120Willard: 153 mg/LWillard 153Fort Leonard Wood: 216 mg/LFort Leona. 216Waynesville: 265 mg/LWaynesville 265Rolla: 272 mg/LRolla 272Marshfield: 296 mg/LMarshfield 296210 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Lebanon sits 89 mg/L above the typical Missouri figure of 121. Of the 10 nearest cities we track, 5 have softer water and 5 have harder. The range nearby runs from 120 mg/L in Springfield to 296 in Marshfield.

What 210 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 210 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 Lebanon

3 people × 75 gallons a day × 12.3 gpg = 2,770 grains a day. A 24,000-grain unit regenerates about every 8 days.

Size it for your household

EPA record for Lebanon's water system

Lebanon PWS · PWSID MO5010458

4 health-based violations since 2016

Serves about 15,442 people from groundwater.

Health-based
4
Monitoring or reporting
2
Open now
0

EPA lists this system as serving Lebanon.

20162017201820192020202120222023202420252026Thallium, Total'16'18'20'22'24'26Thallium, Total
Each dot is one health-based violation, placed at the start of its compliance period.
Contaminant or ruleViolationsPeriodStatus
Thallium, Total42016Resolved

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 Lebanon water hard?

Yes. It measures about 210 mg/L (12.3 grains per gallon), which the USGS classes as very hard.

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

About 12.3 gpg. One grain per gallon equals 17.1 mg/L, so 210 mg/L divided by 17.1 gives 12.3.

What size water softener do I need in Lebanon?

For 3 people using 75 gallons each per day, 12.3 gpg works out to about 2,770 grains a day. A 24,000-grain softener covers that with a regeneration about every 8 days.

Has the Lebanon water system had EPA violations?

EPA records show 4 health-based violations for Lebanon PWS since 2016, involving Thallium, Total. There were also 2 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 90 cities in Missouri

Hardness data: TapWaterData US Water Hardness (calculated from utility data, July 15, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.