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Water Hardness in Indiana Cities

Water hardness, essentially the concentration of dissolved materials like calcium and magnesium, can range dramatically throughout the United States. The heartland states, including Indiana, frequently contend with high water hardness levels, while coastal regions usually enjoy gentler, softer water.

Focusing on Indiana, the specific hardness metrics derived from a multitude of cities suggest a significant leaning toward the extreme end of the hardness scale, in relation to the national average. Therefore, Indiana’s water is in the ‘hard to very hard’ category. Such a characteristic plays an impacting role in aspects such as the water’s flavor and the efficacy of cleaning agents like detergents and soaps. Notably, these hardness levels can show variance and are susceptible to modification considering local geological conditions and variations in water sources.

The examined cities in this dataset display various hardness levels in their water supply, measured in parts per million (ppm) and grains per gallon (gpg). Some cities, like Noblesville, Lafayette, Muncie, Greenwood, Kokomo, Westfield, and Wabash, have particularly high hardness levels, exceeding 300 ppm (17.53 gpg). On the lower end, cities like Angola, Fort Wayne, and New Haven show hardness levels below 130 ppm (7.59 gpg). Many cities, including South Bend, Fishers, Bloomington, Hammond, Anderson, and several others, do not provide data for water hardness.

CityHardness PPM (mg/L)Hardness gpgInformation SourceNotes
Indianapolis314.0018.32LinkCovers Indy and all Morgan County Cities
Fort Wayne122.007.12Link
Evansville132.007.70Link
South Bendn/an/aLink
Fishersn/an/aLink
Carmel137.108.00Link
Bloomingtonn/an/aLink
Hammondn/an/aLink
Noblesville400.0023.34Link
Lafayette351.3220.50LinkSite gives range, took median
Gary145.008.46LinkTook median of the range
Muncie344.0020.07Link
Greenwood371.0021.65LinkPart of Johnson County water report
Kokomo375.0021.88Link
Terre Haute344.0020.07Link
Andersonn/an/aLink
Elkhartn/an/aLink
Mishawaka325.6119.00Link
Westfield387.0022.58Link
Columbus314.0018.40Link
Jeffersonville191.0011.15Link
Lawrencen/an/aLink
West Lafayette333.0019.43Link
Portage145.008.46LinkPart of Greater Gary Area report
New Albany191.0011.15LinkPart of Jeffersonville report
Merrillville145.008.46LinkPart of Greater Gary Area report
Richmond259.0015.11Link
Plainfieldn/an/aLink
Goshen342.7520.00Link
Crown Point145.008.46LinkPart of Greater Gary Area report
Valparaison/an/aLink
Michigan Cityn/an/aLink
Zionsville314.0018.32LinkCovered under Indianapolis (near where I865 and US421 intersect)
Brownsburg280.0016.34LinkTook median of provided range
Schererville145.008.46LinkPart of Greater Gary Area report
Hobart145.008.46LinkPart of Greater Gary Area report
Marionn/an/aLink
East Chicagon/an/aLink
Franklin371.0021.65LinkPart of Johnson County water report
Greenfieldn/an/aLink
Munstern/an/aLink
Highlandn/an/aLink
Avon314.0018.32LinkCovered under Indianapolis (near intersection of 267 and US36)
La Porten/an/aLink
Clarksville191.0011.15LinkPart of Jeffersonville report
Seymour236.0013.77Link
St. Johnn/an/aLink
Shelbyville371.0021.65LinkPart of Johnson County water report
Logansportn/an/aLink
New Castlen/an/aLink
Huntingtonn/an/aLink
Lebanon157.009.16Link
Jaspern/an/aLink
Frankfortn/an/aLink
Vincennesn/an/aLink
Dyern/an/aLink
Crawfordsville411.0023.98Link
Griffithn/an/aLink
Warsaw361.0021.06Link
New Haven126.007.35Link
Cedar Laken/an/aLinkProvides East and West Side reports, neither has info on hardness
Beech Grove314.0018.32LinkCovered under Indianapolis (near where I65 intersects with the I465 beltway)
Chesterton145.008.46LinkPart of Greater Gary Area report
Bedfordn/an/aLink
Speedway250.0014.60Link
Auburnn/an/aLinkNone of the reports mention hardness
Connersvillen/an/aLink
Lake Station145.008.46LinkPart of Greater Gary Area report
Madisonn/an/aLink
Greensburg325.6119.00Link
Washingtonn/an/aLink
Martinsville314.0018.32LinkCovers Indy and all Morgan County Cities
Yorktownn/an/aLink
Perun/an/aLink
Whitestown314.0018.32Link
Lowell175.0010.21Link
Danvillen/an/aLink
Plymouthn/an/aLink
Wabash414.0024.16Link
Blufftonn/an/aLink
Bargersvillen/an/aLink
Kendallvillen/an/aLink
Columbia Cityn/an/aLink
Greencastle187.0010.90Link
Decaturn/an/aLink
Mooresville419.0024.45Link
Sellersburgn/an/aLink
McCordsville314.0018.32LinkCovered under Indianapolis (immediately west of where 234 and 36 intersect)
Huntertownn/an/aLink
Angola85.695.00LinkTheir water treatment process softens it to 5gpg
Elwoodn/an/aLinkCity doesn’t appear to provide Water CCRs, and doesn’t seem to be covered by Indianapolis, Kokomo, or Anderson which are the nearest big cities.
Princetonn/an/aLink
Brazil308.4818.00LinkTook median of listed range
Charlestown203.0011.85Link
Tell Cityn/an/aLink
Winfield145.008.46LinkPart of Greater Gary Area report
Scottsburgn/an/aLink
Batesvillen/an/aLink
Nappaneen/an/aLink
Boonvillen/an/aLink
Top 100 Indiana cities by population and their reported water hardness
ppm = Parts Per Million
mg/L = Milligrams Per Liter
gpg = Grains Per Gallon

Hard water can cause issues such as mineral buildup in plumbing and appliances, reduce the efficacy of soaps and detergents, and affect the taste of the water. A tried and true solution is the use of a water softener. A water softener, like the ones from DROP, could be a worthwhile investment.

These devices work by replacing the calcium and magnesium ions that cause hardness with sodium ions, resulting in softer water. With innovative features, easy installation, and efficient operation, DROP smart water softeners provide a solution to hard water issues, extending the lifespan of appliances, improving water taste, enhancing soap effectiveness, reducing scale build-up, and increasing the overall water efficiency in your home.

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