Hard water in Lincoln Park, MI
Reported by Dearborn · August 2025
- MI typical
- 112 mg/L
- EPA health violations since 2016
- 0
- Softener for 3 people
- 24k grain
- Data
- Utility report
The water in Lincoln Park carries roughly 128 mg/L of dissolved calcium and magnesium, or 7.5 grains per gallon. That is hard water. The number comes from Dearborn, dated August 2025.
At 128 mg/L, Lincoln Park is 16 mg/L above the typical Michigan figure of 112. None of the 10 nearest cities we track has harder water. The range nearby runs from 96 mg/L in River Rouge to 109 in Riverview.
What 128 mg/L means at home
Expect white crust on faucets and showerheads, plus spots on dishes that come out of the dishwasher.
Kettles collect scale quickly. Water heaters build up sediment at the bottom of the tank, which makes them work harder over time.
Soap and detergent need a little more to lather, and soap scum shows up in the tub.
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
At 128 mg/L most of the trouble is scale, and only a few things deal with it.
Ion-exchange water softener
The standard whole-house fix. It swaps calcium and magnesium for sodium or potassium and needs salt plus a drain. Size it with the calculator below.
Salt-free conditioner
No salt and no drain line. It changes how minerals form scale instead of removing them, so water still tests hard.
Reverse osmosis or carbon filter
Under-sink reverse osmosis removes minerals from drinking water only. Plain carbon filters improve taste but do not soften.
3 people × 75 gallons a day × 7.5 gpg = 1,683 grains a day. A 24,000-grain unit regenerates about every 14 days.
EPA record for Lincoln Park's water system
No health-based violations since 2016
Serves about 38,144 people from surface water.
- Health-based
- 0
- Monitoring or reporting
- 7
- Open now
- 1
EPA lists Lincoln Park as the system serving Lincoln Park. The hardness figure above comes from a different system's report, which TapWaterData uses for Lincoln Park.
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 Lincoln Park water hard?
Yes. It measures about 128 mg/L (7.5 grains per gallon), which the USGS classes as hard.
What is the water hardness in Lincoln Park in grains per gallon?
About 7.5 gpg. One grain per gallon equals 17.1 mg/L, so 128 mg/L divided by 17.1 gives 7.5.
What size water softener do I need in Lincoln Park?
For 3 people using 75 gallons each per day, 7.5 gpg works out to about 1,683 grains a day. A 24,000-grain softener covers that with a regeneration about every 14 days.
Has the Lincoln Park water system had EPA violations?
EPA records show no health-based violations for Lincoln Park since 2016. There were also 7 monitoring or reporting violations, which are about late or missing tests and notices.
Nearby cities
- Allen Park104 mg/LModerately hard
- Ecorse104 mg/LModerately hard
- Melvindale104 mg/LModerately hard
- Wyandotte105 mg/LModerately hard
- River Rouge96 mg/LModerately hard
- Taylor102 mg/LModerately hard
- Riverview109 mg/LModerately hard
- Dearborn99 mg/LModerately hard
- Trenton109 mg/LModerately hard
- Inkster104 mg/LModerately hard
Hardness data: TapWaterData US Water Hardness (utility report, August 1, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.