Hard water in Holland, MI

Tap water hardness

141mg/L

8.2gpg

Hard

Reported by Holland Board of Public Works · July 2024

MI typical: 112 mg/L
EPA health violations since 2016: 2
Softener for 3 people: 24k grain
Data: Utility report

The water in Holland carries roughly 141 mg/L of dissolved calcium and magnesium, or 8.2 grains per gallon. That is hard water. The number comes from Holland Board of Public Works, dated July 2024.

Holland on the hardness scale, with nearby cities

Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Holland sits 29 mg/L above the typical Michigan figure of 112. Of the 10 nearest cities we track, 5 have softer water and 4 have harder. The range nearby runs from 137 mg/L in East Grand Rapids to 524 in Grandville.

What 141 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 141 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.

Softener size for Holland

3 people × 75 gallons a day × 8.2 gpg = 1,856 grains a day. A 24,000-grain unit regenerates about every 12 days.

Size it for your household

EPA record for Holland's water system

Holland Board of Public Works · PWSID MI0003190

2 health-based violations since 2016

Serves about 49,687 people from surface water.

Health-based: 2
Monitoring or reporting: 1
Open now: 0

Each dot is one health-based violation, placed at the start of its compliance period.

Contaminant or rule	Violations	Period	Status
Total organic carbon removaltreatment requirement	2	2017–2018	Resolved

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 Holland water hard?

Yes. It measures about 141 mg/L (8.2 grains per gallon), which the USGS classes as hard.

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

About 8.2 gpg. One grain per gallon equals 17.1 mg/L, so 141 mg/L divided by 17.1 gives 8.2.

What size water softener do I need in Holland?

For 3 people using 75 gallons each per day, 8.2 gpg works out to about 1,856 grains a day. A 24,000-grain softener covers that with a regeneration about every 12 days.

Has the Holland water system had EPA violations?

EPA records show 2 health-based violations for Holland Board of Public Works since 2016, involving Total organic carbon removal. There were also 1 monitoring or reporting violation, which are about late or missing tests and notices.

Nearby cities

All 118 cities in Michigan

Hardness data: TapWaterData US Water Hardness (utility report, July 8, 2024), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.