How hard is the water in Gallatin, TN?

Tap water hardness
82mg/L
4.8gpg
Moderately hard

Reported by West Wilson Utility District · March 2025

TN typical
89 mg/L
EPA health violations since 2016
0
Softener for 3 people
24k grain
Data
Utility report

Tap water in Gallatin has about 82 mg/L of hardness, which is 4.8 grains per gallon. On the USGS scale that counts as moderately hard. The number comes from West Wilson Utility District, dated March 2025.

Gallatin on the hardness scale, with nearby cities
060120180240300360+TN typical 89Lebanon: 78 mg/LLebanon 78Hendersonville: 89 mg/LHendersonville 89Green Hill: 89 mg/LGreen Hill 89Mount Juliet: 89 mg/LMount Juliet 89Millersville: 89 mg/LMillersville 89Goodlettsville: 89 mg/LGoodlettsville 89Nashville: 89 mg/LNashville 89Springfield: 199 mg/LSpringfield 199La Vergne: 200 mg/LLa Vergne 200Smyrna: 200 mg/LSmyrna 200Gallatin 82mg/L as calcium carbonate060120180240300360+TN 89Lebanon: 78 mg/LLebanon 78Hendersonville: 89 mg/LHendersonv. 89Green Hill: 89 mg/LGreen Hill 89Mount Juliet: 89 mg/LMount Juli. 89Millersville: 89 mg/LMillersvil. 89Goodlettsville: 89 mg/LGoodlettsv. 8982 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Gallatin sits close to the typical Tennessee figure of 89 mg/L. Of the 10 nearest cities we track, 1 has softer water and 9 have harder. The range nearby runs from 78 mg/L in Lebanon to 200 in La Vergne.

What 82 mg/L means at home

You may see faint white spots on glasses and shower doors after the water dries.

Scale builds up slowly. A kettle or coffee maker needs descaling now and then, maybe every few months.

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

Optional. Plenty of households at this level live with it and descale the kettle now and then.

Water softener

Worth a look if spots on glass bother you, or if your tankless water heater manual asks for softer water.

Carbon filter

Improves taste and removes chlorine. It leaves calcium and magnesium in place.

Softener size for Gallatin

3 people × 75 gallons a day × 4.8 gpg = 1,073 grains a day. A 24,000-grain unit regenerates about every 22 days.

Size it for your household

EPA record for Gallatin's water system

Gallatin Water Department · PWSID TN0000253

No health-based violations since 2016

Serves about 65,964 people from surface water.

Health-based
0
Monitoring or reporting
1
Open now
0

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

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 Gallatin water hard?

Somewhat. It measures about 82 mg/L (4.8 grains per gallon), which the USGS classes as moderately hard.

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

About 4.8 gpg. One grain per gallon equals 17.1 mg/L, so 82 mg/L divided by 17.1 gives 4.8.

What size water softener do I need in Gallatin?

For 3 people using 75 gallons each per day, 4.8 gpg works out to about 1,073 grains a day. A 24,000-grain softener covers that with a regeneration about every 22 days.

Has the Gallatin water system had EPA violations?

EPA records show no health-based violations for Gallatin Water Department since 2016. There were also 1 monitoring or reporting violation, which are about late or missing tests and notices.

Nearby cities

All 44 cities in Tennessee

Hardness data: TapWaterData US Water Hardness (utility report, March 20, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.