How hard is the water in Ashland City, TN?

Tap water hardness
89mg/L
5.2gpg
Moderately hard

Reported by Metro Water Services · October 2025

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

The water in Ashland City carries roughly 89 mg/L of dissolved calcium and magnesium, or 5.2 grains per gallon. That is moderately hard water. The number comes from Metro Water Services, dated October 2025.

Ashland City on the hardness scale, with nearby cities
060120180240300360+TN typical 89Nolensville: 62 mg/LNolensville 62Clarksville: 71 mg/LClarksville 71Nashville: 89 mg/LNashville 89Goodlettsville: 89 mg/LGoodlettsville 89Millersville: 89 mg/LMillersville 89Brentwood: 89 mg/LBrentwood 89Hendersonville: 89 mg/LHendersonville 89Green Hill: 89 mg/LGreen Hill 89Franklin: 98 mg/LFranklin 98Springfield: 199 mg/LSpringfield 199Ashland City 89mg/L as calcium carbonate060120180240300360+TN 89Nashville: 89 mg/LNashville 89Goodlettsville: 89 mg/LGoodlettsv. 89Millersville: 89 mg/LMillersvil. 89Brentwood: 89 mg/LBrentwood 89Hendersonville: 89 mg/LHendersonv. 89Springfield: 199 mg/LSpringfield 19989 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Ashland City sits close to the typical Tennessee figure of 89 mg/L. Of the 10 nearest cities we track, 2 have softer water and 2 have harder. The range nearby runs from 62 mg/L in Nolensville to 199 in Springfield.

What 89 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 Ashland City

3 people × 75 gallons a day × 5.2 gpg = 1,177 grains a day. A 24,000-grain unit regenerates about every 20 days.

Size it for your household

EPA record for Ashland City's water system

Ashland City Water Department · PWSID TN0000023

No health-based violations since 2016

Serves about 9,159 people from surface water.

Health-based
0
Monitoring or reporting
1
Open now
1

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

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 Ashland City water hard?

Somewhat. It measures about 89 mg/L (5.2 grains per gallon), which the USGS classes as moderately hard.

What is the water hardness in Ashland City in grains per gallon?

About 5.2 gpg. One grain per gallon equals 17.1 mg/L, so 89 mg/L divided by 17.1 gives 5.2.

What size water softener do I need in Ashland City?

For 3 people using 75 gallons each per day, 5.2 gpg works out to about 1,177 grains a day. A 24,000-grain softener covers that with a regeneration about every 20 days.

Has the Ashland City water system had EPA violations?

EPA records show no health-based violations for Ashland City 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, October 7, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.