The decision to soften is a personal choice that can affect your home and the environment. If your water’s hardness is greater than 7 grains per gallon or 120 mg/L, then you might need a water softener to ensure your appliances run well and to improve the taste, smell, or look of your water.
An acceptable level range for water hardness is going to be 100- 300 PPM depending on what city you live in and what the water treatment plant has decided on.
A water hardness of 0 to 3 gpg is soft water, 3 to 7 gpg is moderately hard and 7 to 11 gpg is considered hard. Anything more than 11 is considered very hard.
Soft water provided by a utility does not need additional softening and may cause corrosion issues for your home. Make sure the softener is set to the hardness of your water supply. If the hardness is set too high, the softener will cost more to operate and waste water, costing you extra money.
|Hardness in Grains Per Gallon||1 to 2 people*||7 to 8 people*|
|31-40 GPG||40,000 Grain||96,000 Grain|
|41-50 GPG||64,000 Grain||110,000 Grain|
|51-75 GPG||64,000 Grain||110,000 Grain|
|76-100 GPG||80,000 Grain||110,000 Grain|
The level of water softener salt in a brine tank should be at least one quarter full, no more than 4-6 inches below the top of the tank, and a few inches above the water level. Before adding any new salt to a tank, loosen any encrusted salt stuck to the sides of the tank.
The higher the number, the softer the water. – Quora. Hard water usually contains minerals in the water that when that water is used to wash dishes or take a bath it leaves behind a residue.
|Type of Water||Hardness|
|Soft water||10-50 ppm|
|Slightly hard water||50-100 ppm|
|Hard water||100-200 ppm|
|Very hard water||Over 200 ppm|
Measures of water hardness
General guidelines for classification of waters are: 0 to 60 mg/L (milligrams per liter) as calcium carbonate is classified as soft; 61 to 120 mg/L as moderately hard; 121 to 180 mg/L as hard; and more than 180 mg/L as very hard.
There is no such thing as too soft water. Hard water contains metal cations and nonmetal anions. In a softener, the cations are replaced by sodium ions, and the anions are replaced by chloride ions. Once all the hardness ions have been replaced, the process stops.
As mentioned above, the capacity of a water softener describes how much hardness it can remove before it needs to regenerate. A “grain” of hardness is 1/7000th of a pound of dissolved calcium and magnesium. … So, the true maximum softening capacity of 1 cubic foot of resin is perhaps 30,000, and probably a little less.
If a test for hard water is measured in parts per million or milligrams per liter you can take the total hardness level and divide it by 17.1 to get hardness in grains per gallon. For example if your water test shows 250 mg/L hardness you actually have 14.62 grains per gallon.
Water is considered hard when it exceeds 3 grains per gallon (GPG). A GPG is equvalent to 17.1 PPM, so if your water is 171 PPM, then your hardness is 10 GPG (2). When results are returned to you and your water is found to be hard, there are a few options available to you.
In general, water with less than 60 ppm can be considered soft, water with 60-120 ppm moderately hard, and water with greater than 120 ppm hard.
Don’t Add Too Much Salt
Adding too much salt to your water quality softener can cause salt “bridging,” or a buildup and solidification of regenerant. This buildup can prevent your system from regenerating properly.
Your salt consumption will depend on the level of water hardness (minerals in your water) and the amount of water your household consumes. The average family of four with hard water (7-10 grains per gallon hardness level) will use about one 40-lb bag of salt each month.
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.
Hardness does not pose a health risk and is not regulated by state or federal agencies. … The following classifications are used to measure hardness in water: soft 0 – 17.1 parts per million (ppm); slightly hard 17.1 – 60 ppm; moderately hard 60 – 120 ppm; hard 120 – 180 ppm; and very hard 180 or more ppm.
Hard water (high mineral content) is usually high in pH. Soft water (low mineral) is usually low in pH. The mineral in hard water will act as a buffer which will reduce the amount of acid in the water. The resulting water will be more alkaline and higher in pH.
You can convert among water hardness measures. Water with hardness of 25 ppm = 25 mg. of hardness-causing minerals per liter of water. Degrees of Water Hardness.
Natural waters may range from close to zero hardness to many hundreds of parts per million. In our experience, water over 100 or 150 ppm (approximately 8 – 10 grains/gallon) is hard enough to warrant water softening. When the water hardness exceeds 250 – 300 ppm, a water softener becomes somewhat of a necessity.
An average softener should remove 4000 grains of hardness for every One pound of salt used.
3–7: Water between 3–7 gpg is moderately hard, causing spotty dishes and dry skin. 7–11: Hard water is packed with minerals at 7–11 gpg, and you likely deal with crusty faucets and pipes and possibly reddish rings on your porcelain from excess iron.
Use the following information to convert gpg to ppm: 1 grain per U.S. gallon (gpg) = 17.1 milligrams per liter (mg/L) = 17.1 ppm (parts per million).
Hardness is a measure of the magnesium, calcium, and carbonate minerals in water. Water is considered soft if total hardness is less than 75 ppm, moderately hard at 75 to 150 ppm, hard at 150 to 300 ppm, and very hard at 300 ppm or higher.
People can make soft water harder by adding a water hardener to their water, but some caution is advised when using a water hardener, depending on how the water is being used. … Soft water is simply water which lacks a number of dissolved minerals, most notably magnesium and calcium.
For your water, 170 PPM is the same as saying the water has 10 grains per gallon of hardness. This is moderately hard but not extremely hard water. You may expect to see some white scale building up on fixtures, but many homeowners live with 10 grain per gallon water with no problems.
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