We participate in affiliate programs from various companies mentioned in this post and earn a commission when you click on our site. It won’t charge an extra cost

Best Water hardness test kit [for drinking water]

Using a water hardness test kit is one of the best methods to determine your water hardness in GPG or ppm at the comfort of your home.

Testing your water hardness help make sure the right type of water softener system is selected and operates appropriately. 

Most people are concern about understanding water hardness quality right at home rather than mailing samples and waiting for laboratory results. This can only be done using a test kit

It also gives you instant basic test hardness of your water supply right in your home without mailing samples and waiting for laboratory reports.

Water hardness test kit

What is a water hardness test kit?

A water hardness test kit is either water hardness test drop or test strip which has chemical in them designed to react with specific ions in water and produce a particular color change.

Comparison table of water hardness kit

 NameImagetest forcompatible waterWhere to buy
1Hach 145300 test kittotal hardnesstap waterCheck price at Amazon
2Watersafe WS425Whardness, test for iron, chlorine, copper, lead, nitrates, bacteria, pH, nitrites and pesticideswell waterCheck price at Amazon
3LaMotteChlorine, Bromine, Alkalinity, pH, Total Hardnessswimming pool or spaCheck price at Amazon
4Hach 2745250 test striphardnesstap waterCheck price at Amazon
5Industrial Test Systems Test Striphardnesswater treatment, food, beverage, spa, pool, and medical industriesCheck price at Amazon
6Test assured Bulk Test Stripshardnesstap waterCheck price at Amazon
7Hone Forest Test Stripshardnesstap water, fish tank/aquariumCheck price at Amazon
8JNW Direct Test Stripshardnesstap water, well water, spa, pools, hot tub, and aquariumCheck price at Amazon
9Baldwin Meadows 9 in 1 test stripshardness, PH, lead, copper, alkalinity, Iron, Nitrite, nitrate & Chlorinewell water and tap waterCheck price at Amazon

How does the water hardness test kit work?

The water hardness test kit has a chemical in it and is either in the form of a drop or strip.

You fill your test bottle/container with the amount of water dictated by test kit instruction, dip the strip one end or add a drop of test drop wait for few minutes the kit is designed such that it will change to a specific color.

If you use a test drop, the water in the bottle you are using to test will change the color.

In case you are using a strip, the test strip will change the color.

The test kit is provided with the standard printed color chart.

Compare the color with the standard printed color chart provided with the kit to know your water hardness level.

Some brands provide a small glass bottle with a line marked on it.

The line is to guide you on how much water level to fill so as to get the right numbers.

Our top pick for 2020

Review of the best Water hardness test kit

Test strips

Water Hardness Test Strips

#1. Hach 2745250 Total Hardness Test Strips

Buy here

The Hach 2745250 Test Strips is designed to test total hardness from 0-425ppm or 0-25gpm.

Each package contains 50 strips.

#2. Industrial Test Systems WaterWorks 481108 Total Hardness Test Strip

Buy here

The Industrial Systems WaterWorks test strip evaluate calcium levels from 0-1000 parts per million or 0-58 grains per gallon with three second test time.

This test kit is used to analyze the water testing kit for water treatment, food, beverage, spa, pool, and medical industries.

In the package contain 30 test strips and color chart.

#3. Test assured Bulk Water Hardness Test Strips 

Buy here

The test assured test bulk strips evaluate water hardness from 0ppm To 500ppm or 0-30 gpg with 15 seconds test time.

The strips are packed in a seal-able lock pouch which has desiccant for ultimate freshness.

In the package includes 35 test strips and color chart.

#4. Hone Forest Water Hardness Test Strips

Buy here

The Hone Forest hard water test kit is designed to test for drinking water total hardness, test water to make sure your water softener is working effectively,  evaluate the hardness of your fish tank/aquarium, test water for laundry and dishwasher.

In the package includes 100 test strips, desiccant in the bottle, a packing bottle and packing color box.

The test strip is easy to use dip the test strip pad in water for 2-seconds, remove, shake off excess water, wait for 40 seconds and match the strip color using the color chart.

#5. JNW Direct Water Total Hardness Test Strips

Buy here

The JNW water hardness test strips easily test to see your water softener, water conditioner and reverse osmosis system are working effectively.

It provides reliable instant results and easy to use with clear instruction.  You only dip strips in the water and compare with a large color chart on the bottle.

Each package has a total of 150 strips which are suitable for testing tap water, well water, spa, pools, hot tub, and aquarium. In the package also comes with e-book explaining what your results mean and everything you require to know concerning the hardness of your water.

#6. Health mate Water Test Kits

Buy here

Health mate water test kits tests for Total Chlorine, pH, Free Chlorine, Alkalinity, and Total Hardness.

It also checks safeness of your drinking water.

Provide easy to read results in 30-60 seconds.

#7. Health metric Premium Water Hardness Test Kit

water hardness test strip

Buy here

The health metric water hardness test kit regularly tests your water softener, aquarium, pool and spa water.

The package contains 50 strips. The unused strips remain airtight and dry for future use, allowing you to carry out measurements up to 10 months after initial use.

After dipping the strip in water compare with a large color chart on the bottle.

The color chart is easy to read and designed to measure both GPG (grains per gallon) and PPM (parts per million)

#8. TestSure 9 in 1 Drinking Water Test Kit

Buy here

TestSure 9 in 1 Drinking Water Test Kit contains 9-strips in a pack and test any water source for 9 specific harmful contaminants.

It is designed to test Lead, Nitrate, Copper, pH, Iron, Free Chlorine, Total Hardness, Nitrite, and Total Alkalinity.

The test strips are easy to use and provide results in 3-8 minutes.

#9. Z&Y Better Life Water Hardness Test kit

Buy here

Z&Y Better Life test strips are total hardness test kit that tests drinking water, aquarium, Pool & Spa

#10. 16-in-1 Water Test Strips by ON4HOME

Buy here

ON4HOME water test strips have the ability to check levels for total hardness, pH, fluoride, lead, mercury, copper, nitrate, nitrite, residual chlorine, total chlorine, bromine, carbonate, total alkalinity, zinc, aluminum, and cyanuric acid.

It is used to test Drinking Water, Ground Water, Pool, Spa, Hot Tub, and aquarium.

These test strips provide results in 60 seconds, is FDA approved and CE certified for home use

#11. Just filter Total Water Hardness Test Strips

Buy here

Just filter test strips are used to test total water hardness for Pool, Spa, Aquarium, and Drinking Water.

It provides results in 60 seconds.

The package contains 100 strips plus 25 free test strips so in total, you get 125 strips.

#12. Efantur Water Hardness Test Strips

Buy here

The Efantur test strips are used to test total water hardness.

This product contains 150 test strips that provide accurate and fast results.

The Efantur hard water test strips is used to monitor water in places such as fish tank (aquarium), drinking water, water softener, pools, well, laundry, tap water, spa water and dishwasher.

It measures the total hardness between 0-425 ppm.

#13. Yukysa 100PCS Water Hardness Test Strips

Buy here

The package includes 100 pieces of water hardness test strip.

It monitors water hardness for laundry, dishwasher and water sources such as drinking water, home faucets, pools, city water, hot tubs water, boiler water, spas, aquariums, and well (freshwater and saltwater).

For the right results wait and read results in 60 seconds.

#14. Life2O Water Total Hardness Test Strips

Buy here

Life2O water hardness test kit is used for testing Water Softener, Aquarium, Pool, Spa, Drinking and Well Water.

The package contains 100 strips.

This product measures water hardness in 0 – 25 Grains per Gallon (GPG) and 0 – 425 mg/L (PPM).

#15. Baldwin meadows Total Hardness Water Test Strips Kit

Buy here

Baldwin meadows total Hardness Water Test Strips tests hardness ranges from 0-425 mg/l.

The kit has 100 test strips.

#16. Crystal water Total Water Hardness Test Strips Kit

Buy here

#17. LaMotte 5918 Urban Water Quality Test Kit

Buy here

Well water test kit

Well water test kit

#18. Watersafe WS425W Well Water Test Kit

Buy here

The watersafe test kit is designed to help test quick and easy contaminants found in private water well.

It is suitable to determine your water hardness, test for iron, chlorine, copper, lead, nitrates, bacteria, pH, nitrites and pesticides.

If you draw water from the private well, it is recommended to test your water yearly or more to make certain the clarity of your water.

#19. Industrial Test Systems 481302 WaterWorks 

Buy here

The Industrial Test Systems 481302 is designed to test well water for:

  • PH 6.2, 6.8, 7.2, 7.8, 8.4
  • Total Alkalinity:0, 40, 80, 120, 180, 240 ppm (mg/L)
  • Total Hardness: 0, 25, 50, 120, 250, 425 ppm (mg/L)
  • Fe+2: 0, 0.1, 0.3, 1.0, 5.0 ppm (mg/L)
  • NO3: 0, 0.5, 2, 5, 10, 20, 50 ppm (mg/L)/NO2: 0.15, 0.3, 1, 1.5, 3, 10 ppm (mg/L), 2 tests
Water hardness test kit drops

Water hardness test kit drops

#20. Hach 145300 Total Hardness Test Kit

Buy here

The Hach total hardness test kit allows determination of total hardness as grain per gallon with a range of 1-30 grains per gallon, but it does not test for magnesium and iron.

This kit includes 5-B and 5-EP models designed for those in need quick check on the efficiency of the water softeners.

It also comes with a test tube holds a capacity of 5ml and measuring bottle.

You can run 50-100 tests using Hach kit depending on your water hardness.

How does is work

Put testing water in a test tube; add reagent/chemical to the tube, shake until dissolve, if your water can turn blue meaning your water has zero grains of hardness.

If your water turns pink/purple, you need to add drop until your water change to blue. Count the number of drops you add. The number of drops you have to add to get the water turn blue is a grain of hardness.

For example, if you add 15 drops for your water to turn blue equal to 15 grains of hardness. Meaning your water is hard.

#21. Pentair R151276 1200 Total Water Hardness Test Kit

Buy here

Pentair test kit is total hardness test kit.

#22. Color Kim Total Water Hardness Test

The AQUAX total water hardness test kit help to determine water quality in pools, spas, aquarium, and industries where water hardness is important.

The container contains 100 drops enough to perform multiple tests.

It comes with a straightforward color chart.

Testing Water hardness with soap kit
Testing Water hardness with soap kit

#23. Soft-Water-Test-Kit by Amanzi 

Buy here

The Amanzi soft water test kit monitors what your water hardness might be.

The kit includes a test bottle, .5oz bottle of soap solution and instruction guide.

How does it work?

Add water half full in the clear bottle, put one drop of solution from a dropper bottle, shake thoroughly, lasting suds indicate soft water

What to consider when buying a water hardness test kit

  • Where to use the hardness kit

Water hardness kit can be used to test drinking water, spas, aquarium, and pools. 

There are some that are only meant to test your drinking water or pool water others can test all water sources.

Choose the kit that can be used to test the type of water you want.

  • Which contaminants can be used to test?

Water hardness not only tests for hardness, but they also test for lead, alkalinity, chlorine, iron, nitrates and/or pH.

The kit that combines testing more than one contaminant offers great awareness of your water.

If you only need a kit that only test hardness you can choose the one designed for that use.

  • The time it takes to get results.

You should know the length of time it takes to get the results. Other test kits recommend you do more than one round of testing to confirm the taste

  • Easy to analyze the result

The test kit should be easy to use. The most test kit comes with a color matching chart. The chart should be easy to use and interpret. 

How to Test Water Hardness using test strip and test drop

What does a water hardness testing kit test measure?

The water hardness test kit measure calcium and magnesium

If you want an instant test of the hardness of your city water supply, well water supply, and pool water right at home without mailing in samples or waiting for laboratory reports, then water hardness test kit will help on that.

Hoping our review of the best Water hardness test kit will help find the right product to meet all your needs.

water hardness test kit

Please tell us which method you use to test the hardness of your water right at home and which brand would you recommend in the comment section below.

Water testing products

Leave a Comment