In the U.S. water hardness is most often reported as milligrams per liter (mg/L), or parts per million (ppm) as calcium carbonate (CaCO3). Hardness may also be reported as "degrees hardness" (dH) or as grains-per-gallon (gpg).

     Hard Water?

Reading Your Results

Hardness as Calcium carbonate


Degrees Hardness




0-400-20-2Very Soft
425-100025-5725-58Very Hard


There are many solutions when it comes to hard water. These solutions may be temporary and only soften a small amount of water at one time (Water pitcher filters and boiling water). There are also whole house filtration systems and water softeners.

***All installs include a 1 year installation warranty***


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Choosing the Right Water Softener

To determine the appropriate water softener size for your home, multiply the number of people in your home by the gallons of water they use each day. (80 gallons per person is the average.) Multiply that number by the grains of hardness in your water to figure out how many grains need to be removed each day. Most four-person households use a 33,000-grain unit.

Hard Water Basics

  • Total Hardness: A measure of the total amount of calcium and magnesium that has naturally leached into the water supply during its journey through watershed. While hard water may not be harmful to your health, it can create quite a burden. 
    • Cleaning: Certain minerals in the hard water interact with the soap or detergent reducing the effectiveness of soaps and detergents. 
    • Showering: Hard water can make soap less effective (which can lead to the use of more product), and can create scale and film buildup in showers, requiring increased frequency of cleaning, and increased use of chemicals to clean the shower walls and tub. 
    • ​Energy Consumption: For gas water heaters, hard water can reduce the efficiency of your water heater. 5 grains per gallon of hardness can cause an 8 percent loss in efficiency, and an 8 percent increase in cost when using 100 gallons of hot water per day. 
    • ​​​Excessive Hardness: Excess hardness can cause scaling inside your pipes, water heaters, coffee makers and even industrial machinery (Scale formation depends on several factors, including temperature and pH). The scale restricts the flow through the pipes and is a poor conductor of heat. Eventually, your pipes can become completely clogged.

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