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Missouri Water Hardness Map

Published: January 30, 2026

Hard water in your MO home

Missouri is known for having water that is relatively hard, which means it contains high levels of minerals like calcium and magnesium. While these minerals are not dangerous to your health, when in excess amounts, they may create problems around your home.

What Problems Can Missouri’s Hard Water Cause?

Missouri’s hard water can cause the following issues:

  • Make it challenging to get your laundry clean
  • Leave spots on glassware and dishes
  • Excessive buildup or accumulation of materials inside plumbing fixtures and pipes can cause blockages, restricting the flow of water

All of these are signs that you may need a water softener

Missouri Water Hardness by City

The hardness of water varies depending on the city in which you reside. In Missouri, water data can vary significantly. Here are some of the major cities in Missouri and their respective water hardness levels:

Looking for additional state water hardness data? Explore more water hardness reports:

Water Hardness Chart
Missouri Hardness Chart Mobile

A-C

  • Belton: 7.6gpg
  • Blue Springs: 7.6gpg
  • Bolivar: 12.6gpg
  • Branson: 7.1gpg
  • Cape Girardeau: 11.5gpg
  • Carthage: 8.9gpg
  • Columbia: 12.3gpg

D-I

  • Eureka: 13.4gpg
  • Farmington: 19.7gpg
  • Grain Valley: 7.6gpg
  • Hannibal: 10.8gpg
  • Independence: 7gpg

J-R

  • Jackson: 17.9gpg
  • Jefferson City: 6.7gpg
  • Joplin: 8.4gpg
  • Kansas City: 6.7gpg
  • Kennett: 4.9gpg
  • Kirksville: 6.8gpg
  • Lee’s Summit: 7.6gpg
  • Liberty: 9.8gpg
  • Moberly: 8.1gpg
  • Nixa: 11gpg
  • Oakville: 7.9gpg
  • O’Fallon: 6.7gpg
  • Ozark: 11gpg
  • Poplar Bluff: 7.2gpg
  • Raymore: 7.6gpg
  • Raytown: 7.6gpg
  • Rolla: 15gpg

S-Z

  • Sedalia: 14.7gpg
  • Smithville: 6.6gpg
  • Springfield: 8.9gpg
  • St. Louis: 7.8gpg
  • St. Charles: 7.4gpg
  • St. Joseph: 12.7gpg
  • St. Peters: 8.3gpg
  • Troy: 16.5gpg
  • Webb City: 9.9gpg
  • Wentzville: 17.8gpg

How to Treat Hard Water in Missouri

If you’re dealing with hard water in your home, there are several effective solutions you can try. Some we recommend are:

Use a water softener: This device removes minerals from your water supply, making it softer and more manageable.

Install a reverse osmosis system: This filtration system removes contaminants from your water source to yield healthier, better-tasting water.

Use water softener salt: This salt removes hard water minerals and helps extend the life of your appliances and plumbing fixtures.

Invest in a Culligan Water Cooler: The clean, refreshing water from a Culligan water cooler is ideal for drinking water–keeping everyone hydrated and energized throughout the day, without the price or waste of bottles.

Treating Water Hardness in Your State

Water Coolers

Water Coolers

Give your team the water they deserve

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Water Softeners

Water Softeners

Pure Water, Straight from the Tap

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Drinking Water Systems

Drinking Water Systems

Soft Water Benefits You and Your Home

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Salt-Free Alternatives

Salt-Free Alternatives

Experience the difference of clean water

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Culligan can help

If you’re experiencing hard water issues or issues with your water quality, Culligan can provide the perfect solution for you. Our team of experts can help you determine the best water treatment system for your home or business and provide expert installation and maintenance services. Contact us today to learn more!