How hard is the water in Ludington, MI?

Tap water hardness
112mg/L
6.5gpg
Moderately hard

Reported by ST Ignace · May 2022

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

The water in Ludington carries roughly 112 mg/L of dissolved calcium and magnesium, or 6.5 grains per gallon. That is moderately hard water. The number comes from ST Ignace, dated May 2022.

Ludington on the hardness scale, with nearby cities
060120180240300360+MI typical 112Walker: 138 mg/LWalker 138Grand Rapids: 138 mg/LGrand Rapids 138Muskegon: 141 mg/LMuskegon 141Muskegon Heights: 146 mg/LMuskegon Heights 146Cadillac: 147 mg/LCadillac 147Traverse City: 163 mg/LTraverse City 163Big Rapids: 172 mg/LBig Rapids 172Allendale: 260 mg/LAllendale 260Greenville: 346 mg/LGreenville 346Grandville: 524 mg/LGrandville 524Ludington 112mg/L as calcium carbonate060120180240300360+MI 112Muskegon: 141 mg/LMuskegon 141Muskegon Heights: 146 mg/LMuskegon H. 146Cadillac: 147 mg/LCadillac 147Traverse City: 163 mg/LTraverse C. 163Big Rapids: 172 mg/LBig Rapids 172Allendale: 260 mg/LAllendale 260112 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Ludington sits close to the typical Michigan figure of 112 mg/L. None of the 10 nearest cities we track has softer water. The range nearby runs from 138 mg/L in Walker to 524 in Grandville.

What 112 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 Ludington

3 people × 75 gallons a day × 6.5 gpg = 1,474 grains a day. A 24,000-grain unit regenerates about every 16 days.

Size it for your household

EPA record for Ludington's water system

Ludington · PWSID MI0003960

No health-based violations since 2016

Serves about 8,184 people from surface water.

Health-based
0
Monitoring or reporting
0
Open now
0

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

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 Ludington water hard?

Somewhat. It measures about 112 mg/L (6.5 grains per gallon), which the USGS classes as moderately hard.

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

About 6.5 gpg. One grain per gallon equals 17.1 mg/L, so 112 mg/L divided by 17.1 gives 6.5.

What size water softener do I need in Ludington?

For 3 people using 75 gallons each per day, 6.5 gpg works out to about 1,474 grains a day. A 24,000-grain softener covers that with a regeneration about every 16 days.

Has the Ludington water system had EPA violations?

EPA records show no health-based violations for Ludington since 2016.

Nearby cities

All 118 cities in Michigan

Hardness data: TapWaterData US Water Hardness (utility report, May 31, 2022), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.