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Water Hardness in Minnesota Cities

Water hardness in Minnesota, characterized by the amount of dissolved minerals such as calcium and magnesium, can significantly differ among various cities across the state due to its varied geological landscapes. Situated in the Midwestern region of the U.S., Minnesota’s water hardness levels reflect the geological diversity within the state.

Across Minnesota, water hardness can range from moderately soft to significantly hard, depending on the geological make-up of the area and the source of the water supply. For example, many areas in Minnesota have not provided data on water hardness, indicating a potential range of variability. On the other hand, regions with recorded levels suggest hardness owing to the mineral composition of their water supply.

The variation in water hardness throughout Minnesota influences not only the taste and aesthetics of the water but also the efficiency of soaps and detergents, plumbing maintenance, and the lifespan of appliances that utilize water. Given the state’s considerable geological diversity, water hardness is not uniform, highlighting the need for localized water treatment solutions and ongoing monitoring of water quality.

In the provided data, the water hardness levels show substantial variations across different cities in Minnesota. Among the cities for which data is reported, the highest water hardness level is recorded in Chaska with a hardness ppm of 445.1 and a hardness gpg of 26.0. Conversely, the city with the lowest recorded water hardness level is Bloomington, reporting a hardness ppm of 89.0 and a hardness gpg of 5.2.

CityHardness ppm (mg/L)Hardness gpgInformation SourceNotes
Minneapolisn/an/aLink
St. Pauln/an/aLink
Rochester280.017.0Link
Bloomington89.05.2LinkWater system softens the water
Duluthn/an/aLink
Brooklyn Parkn/an/aLink
Plymouthn/an/aLink
Woodburyn/an/aLink
Lakevillen/an/aLink
Blainen/an/aLink
Maple Groven/an/aLink
St. Cloudn/an/aLink
Eagan325.219.0Link
Burnsville402.323.5Link
Coon Rapidsn/an/aLink
Eden Prairie90.05.3LinkUsed the treated value. Untreated is 380.
Apple Valleyn/an/aLink
Edinan/an/aLink
Minnetonkan/an/aLink
St. Louis Park330.019.0Link
Mankaton/an/aLink
Moorheadn/an/aLink
Shakopeen/an/aLink
Maplewoodn/an/aLinkGets water from St. Paul
Cottage Grove298.017.0Link
Richfieldn/an/aLinkMentions they soften the water, but don’t quantify
Rosevillen/an/aLink
Inver Grove Heights359.521.0Link
Savage342.420.0Link
Andovern/an/aLink
Brooklyn Centern/an/aLink
Fridley247.514.5Link
Ramseyn/an/aLink
Prior Lake330.019.3Link
Chaska445.126.0Link
Oakdalen/an/aLink
Shoreviewn/an/aLink
Rosemountn/an/aLink
Owatonnan/an/aLink
Austin273.916.0Link
Elk Rivern/an/aLink
Chanhassen359.521.0Link
Winonan/an/aLink
Faribaultn/an/aLink
White Bear Laken/an/aLink
Farmington283.016.5Link
Champlinn/an/aLink
New Brightonn/an/aLink
Crystaln/an/aLinkPurchases from Minneapolis
Golden Valleyn/an/aLink
Hastingsn/an/aLink
Columbia Heightsn/an/aLink
Lino Lakesn/an/aLink
Otsego256.815.0Link
New Hopen/an/aLink
Willmarn/an/aLink
West St. Pauln/an/aLinkGets water from St. Paul
Northfield320.018.0Link
Forest Laken/an/aLink
South St. Pauln/an/aLink
Sartelln/an/aLink
Stillwatern/an/aLink
St. Michaeln/an/aLink
Hopkinsn/an/aLink
Albert Lean/an/aLink
Anokan/an/aLink
Red Wingn/an/aLink
Ham Laken/an/aLinkMight be largely wellwater, only see watershed management, no consumer reports
Buffalo359.521.0Link
Hugon/an/aLink
Hibbingn/an/aLink
Bemidjin/an/aLink
Hutchinsonn/an/aLink
Monticellon/an/aLink
North Mankaton/an/aLink
Alexandria428.025.0Link
Brainerdn/an/aLink
Robbinsdalen/an/aLink
New Ulmn/an/aLink
Fergus Fallsn/an/aLink
Sauk Rapidsn/an/aLink
Worthingtonn/an/aLink
Marshall136.98.0Link
Rogersn/an/aLink
Waconian/an/aLink
Mounds Viewn/an/aLink
Lake Elmon/an/aLink
Cloquetn/an/aLink
Vadnais Heightsn/an/aLink
North St. Pauln/an/aLink
Big Laken/an/aLink
East Betheln/an/aLink
St. Petern/an/aLink
Mendota Heightsn/an/aLinkProvided by St. Paul
Grand Rapidsn/an/aLink
North Branch273.015.9Link
Victorian/an/aLink
Little Canadan/an/aLink
Fairmontn/an/aLink
Hermantownn/an/aLink
Top 100 Minnesota 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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