Maryville, TN water hardness

Tap water hardness
42mg/L
2.4gpg
Soft

Reported by City of Maryville W&S Dept · August 2025

TN typical
89 mg/L
EPA health violations since 2016
0
Data
Utility report

The water in Maryville carries roughly 42 mg/L of dissolved calcium and magnesium, or 2.4 grains per gallon. That is soft water. The number comes from City of Maryville W&S Dept, dated August 2025.

Maryville on the hardness scale, with nearby cities
060120180240300360+TN typical 89Alcoa: 37 mg/LAlcoa 37Eagleton Village: 46 mg/LEagleton Village 46Chattanooga: 70 mg/LChattanooga 70Red Bank: 70 mg/LRed Bank 70Harrison: 71 mg/LHarrison 71Knoxville: 91 mg/LKnoxville 91Powell: 99 mg/LPowell 99Oak Ridge: 132 mg/LOak Ridge 132Cleveland: 150 mg/LCleveland 150Morristown: 260 mg/LMorristown 260Maryville 42mg/L as calcium carbonate060120180240300360+TN 89Alcoa: 37 mg/LAlcoa 37Eagleton Village: 46 mg/LEagleton V. 46Knoxville: 91 mg/LKnoxville 91Powell: 99 mg/LPowell 99Oak Ridge: 132 mg/LOak Ridge 132Morristown: 260 mg/LMorristown 26042 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

At 42 mg/L, Maryville is 47 mg/L below the typical Tennessee figure of 89. Of the 10 nearest cities we track, 1 has softer water and 9 have harder. The range nearby runs from 37 mg/L in Alcoa to 260 in Morristown.

What 42 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 42 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 Maryville's water system

City of Maryville W&S Dept · PWSID TN0000438

No health-based violations since 2016

Serves about 52,105 people from surface water.

Health-based
0
Monitoring or reporting
2
Open now
0

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 Maryville water hard?

No. It measures about 42 mg/L (2.4 grains per gallon), which the USGS classes as soft.

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

About 2.4 gpg. One grain per gallon equals 17.1 mg/L, so 42 mg/L divided by 17.1 gives 2.4.

Has the Maryville water system had EPA violations?

EPA records show no health-based violations for City of Maryville W&S Dept since 2016. There were also 2 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 44 cities in Tennessee

Hardness data: TapWaterData US Water Hardness (utility report, August 5, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.