Lebanon, NH water hardness

Tap water hardness
22mg/L
1.3gpg
Soft

Reported by Lebanon Water Dept · October 2025

NH typical
20 mg/L
EPA health violations since 2016
1
Data
Utility report

Lebanon water measures 22 mg/L (1.3 gpg) of hardness, soft by USGS standards. The number comes from Lebanon Water Dept, dated October 2025.

Lebanon on the hardness scale, with nearby cities
060120180240300360+NH typical 20Concord: 13 mg/LConcord 13Keene: 15 mg/LKeene 15Manchester: 16 mg/LManchester 16Rochester: 20 mg/LRochester 20Nashua: 31 mg/LNashua 31Hudson: 31 mg/LHudson 31Dover: 64 mg/LDover 64Derry: 123 mg/LDerry 123Portsmouth: 123 mg/LPortsmouth 123Lebanon 22mg/L as calcium carbonate060120180240300360+NH 20Concord: 13 mg/LConcord 13Keene: 15 mg/LKeene 15Manchester: 16 mg/LManchester 16Rochester: 20 mg/LRochester 20Nashua: 31 mg/LNashua 31Derry: 123 mg/LDerry 12322 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 close to the typical New Hampshire figure of 20 mg/L. Of the 9 nearest cities we track, 4 have softer water and 5 have harder. The range nearby runs from 13 mg/L in Concord to 123 in Derry.

What 22 mg/L means at home

Soap and shampoo lather with very little product. Kettles and showerheads stay mostly free of white crust.

Some people notice that soap feels slow to rinse off in soft water. That slippery feel is normal and harmless.

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

Nothing, as far as hardness goes. At 22 mg/L a softener would have almost nothing to remove.

Carbon filter

If the water tastes of chlorine, a pitcher or faucet carbon filter takes care of that. It does not change hardness.

EPA record for Lebanon's water system

Lebanon Water Dept · PWSID NH1321010

1 health-based violation since 2016

Serves about 13,600 people from surface water.

Health-based
1
Monitoring or reporting
0
Open now
0
20162017201820192020202120222023202420252026Surface Water Treatment Rule'16'18'20'22'24'26Surface Water Treatment Rule
Each dot is one health-based violation, placed at the start of its compliance period.
Contaminant or ruleViolationsPeriodStatus
Surface Water Treatment Rulefiltration and disinfection12023Resolved

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?

No. It measures about 22 mg/L (1.3 grains per gallon), which the USGS classes as soft.

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

About 1.3 gpg. One grain per gallon equals 17.1 mg/L, so 22 mg/L divided by 17.1 gives 1.3.

Has the Lebanon water system had EPA violations?

EPA records show 1 health-based violation for Lebanon Water Dept since 2016, involving Surface Water Treatment Rule.

Nearby cities

All 10 cities in New Hampshire

Hardness data: TapWaterData US Water Hardness (utility report, October 19, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.