Hard water in Orland Park, IL

Tap water hardness
147mg/L
8.6gpg
Hard

Reported by Orland Park · November 2024

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

The water in Orland Park carries roughly 147 mg/L of dissolved calcium and magnesium, or 8.6 grains per gallon. That is hard water. The number comes from Orland Park, dated November 2024.

Orland Park on the hardness scale, with nearby cities
060120180240300360+IL typical 139Mokena: 91 mg/LMokena 91New Lenox: 137 mg/LNew Lenox 137Orland Hills: 147 mg/LOrland Hills 147Lemont: 228 mg/LLemont 228Oak Lawn: 229 mg/LOak Lawn 229Blue Island: 229 mg/LBlue Island 229Homer Glen: 287 mg/LHomer Glen 287Frankfort: 287 mg/LFrankfort 287Tinley Park: 300 mg/LTinley Park 300Lockport: 458 mg/LLockport 458Orland Park 147mg/L as calcium carbonate060120180240300360+IL 139Mokena: 91 mg/LMokena 91Orland Hills: 147 mg/LOrland Hil. 147Lemont: 228 mg/LLemont 228Homer Glen: 287 mg/LHomer Glen 287Frankfort: 287 mg/LFrankfort 287Tinley Park: 300 mg/LTinley Park 300147 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 147 mg/L, Orland Park is close to the typical Illinois figure of 139 mg/L. Of the 10 nearest cities we track, 2 have softer water and 7 have harder. The range nearby runs from 91 mg/L in Mokena to 458 in Lockport.

What 147 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 147 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 Orland Park

3 people × 75 gallons a day × 8.6 gpg = 1,935 grains a day. A 24,000-grain unit regenerates about every 12 days.

Size it for your household

EPA record for Orland Park's water system

Orland Park · PWSID IL0312310

No health-based violations since 2016

Serves about 58,020 people from surface water.

Health-based
0
Monitoring or reporting
1
Open now
1

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 Orland Park water hard?

Yes. It measures about 147 mg/L (8.6 grains per gallon), which the USGS classes as hard.

What is the water hardness in Orland Park in grains per gallon?

About 8.6 gpg. One grain per gallon equals 17.1 mg/L, so 147 mg/L divided by 17.1 gives 8.6.

What size water softener do I need in Orland Park?

For 3 people using 75 gallons each per day, 8.6 gpg works out to about 1,935 grains a day. A 24,000-grain softener covers that with a regeneration about every 12 days.

Has the Orland Park water system had EPA violations?

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

Nearby cities

All 192 cities in Illinois

Hardness data: TapWaterData US Water Hardness (utility report, November 11, 2024), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.