What Size Water Softener Do I Need?

June 18, 2018 | Posted in Water Softener | By

Pristine soft water

If you’ve recently found out that your home has hard water, and want to do something to soften it, you may be wondering what size of water softener you will need. The size of water softener that your home needs depends on several variables, which we’ll look at below!


When shopping for an appropriate water softener to use for your home, you’ll want to find one that has a high efficiency. Efficiency generally has to do with how much salt a water softener uses. The most efficient water softeners can remove a high amount of hardness using as little salt as possible. This can save you both money and effort since more efficient softeners will not require salt to be replaced as often.

Hardness of Your Home Water

You will also need to know how hard your home water is, or how much dissolved calcium and magnesium is present in your water. There are test kits available that will let you determine your water’s hardness level yourself, or you can have a professional test your water for you. You may also be able to get the hardness level from your water utility service if you use city water. It’s important to have this level available in order to choose a properly sized water softener system.

Daily Water Consumption

After the water hardness level, the next thing you’ll need to know is your household’s amount of water consumption. There are two common ways to find this amount. One is to check the consumption amount shown on your water bill. The total amount is often shown per month, but you can calculate how much that amount would work out to per day by dividing the total by the number of days in the month. However, if you do not have a total consumption amount available from a water bill, you can still get an approximate daily consumption estimate. To do so, multiply the number of people in the household by 75 gallons. The resulting number should be an approximate estimate of your household’s daily water consumption.

Softening Requirement

To make the final decision about what size water softener your household needs, you’ll need to know an estimate of how much water hardness (usually expressed in grains) that it needs to remove per day. To get this estimate, you’ll use the hardness level you had tested, and your daily water consumption amount. Multiply the number of grains of hardness your water has by the number of gallons of your household’s daily water consumption. The resulting number will be the number of grains your water softener needs to be able to remove from your home water per day. This number will help you choose a water softener of an efficient size for your home.

Don’t want to deal with the salt? Consider getting a salt-free water conditioner for your home! For more information about what type of water softener or salt-free water conditioner would benefit your home, or to schedule a consultation, contact Clear Water of San Marcos, located in San Marcos, TX.