How hard is the water in Muscle Shoals, AL?

Tap water hardness
71mg/L
4.2gpg
Moderately hard

Reported by Muscle Shoals Utility Board · June 2022

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

Muscle Shoals water measures 71 mg/L (4.2 gpg) of hardness, moderately hard by USGS standards. The number comes from Muscle Shoals Utility Board, dated June 2022.

Muscle Shoals on the hardness scale, with nearby cities
060120180240300360+AL typical 73Hamilton: 38 mg/LHamilton 38Florence: 62 mg/LFlorence 62Sheffield: 73 mg/LSheffield 73Decatur: 74 mg/LDecatur 74Harvest: 78 mg/LHarvest 78Russellville: 88 mg/LRussellville 88Triana: 100 mg/LTriana 100Athens: 112 mg/LAthens 112Madison: 112 mg/LMadison 112Tuscumbia: 120 mg/LTuscumbia 120Muscle Shoals 71mg/L as calcium carbonate060120180240300360+AL 73Florence: 62 mg/LFlorence 62Sheffield: 73 mg/LSheffield 73Decatur: 74 mg/LDecatur 74Russellville: 88 mg/LRussellvil. 88Athens: 112 mg/LAthens 112Tuscumbia: 120 mg/LTuscumbia 12071 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 71 mg/L, Muscle Shoals is close to the typical Alabama figure of 73 mg/L. Of the 10 nearest cities we track, 2 have softer water and 8 have harder. The range nearby runs from 38 mg/L in Hamilton to 120 in Tuscumbia.

What 71 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 Muscle Shoals

3 people × 75 gallons a day × 4.2 gpg = 934 grains a day. A 24,000-grain unit regenerates about every 25 days.

Size it for your household

EPA record for Muscle Shoals's water system

Muscle Shoals Utility Board · PWSID AL0000321

No health-based violations since 2016

Serves about 22,467 people from surface water.

Health-based
0
Monitoring or reporting
1
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 Muscle Shoals water hard?

Somewhat. It measures about 71 mg/L (4.2 grains per gallon), which the USGS classes as moderately hard.

What is the water hardness in Muscle Shoals in grains per gallon?

About 4.2 gpg. One grain per gallon equals 17.1 mg/L, so 71 mg/L divided by 17.1 gives 4.2.

What size water softener do I need in Muscle Shoals?

For 3 people using 75 gallons each per day, 4.2 gpg works out to about 934 grains a day. A 24,000-grain softener covers that with a regeneration about every 25 days.

Has the Muscle Shoals water system had EPA violations?

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

Nearby cities

All 91 cities in Alabama

Hardness data: TapWaterData US Water Hardness (utility report, June 7, 2022), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.