Many people have probably heard about the benefits of soft water. Cleaner clothes, softer skin, better pipes and no spotting on dishes are always at the top of the list.
But what about all that salt
If ones ever seen the salt rock supply being replaced in a water softener it's8217;s easy to leave with the impression that this 10 pound bag of sodium is actually being added to the
water. However, the salt is really being used to recharge the resin medium that the water passes through. This recharging is an ion exchange. As the water passes through the tank hard
mineral ions (mostly calcium and magnesium) are exchanged for soft mineral ions (sodium or potassium).
After about 6 days the resin medium is depleted and can no longer exchange ions. At this point the resin will be automatically recharged with a flush of sodium or potassium and be ready
for another week of work.
The small amount of sodium that is added to your water is a result of this ongoing ion exchange between the water and the resin medium.
So how much sodium is added to your water
That depends on the hardness of the water entering the softener. Below is a simple chart which shows the additional amount of sodium you would consume by drinking one quart (32oz) of
softened water.
Note: GPG represents grains per gallon and is the standard measurment for water hardness.
1.0 GPG Hardness equal 7.5 mg sodium per quart
5.0 GPG Hardness equal 37.5 mg sodium per quart
10.0 GPG Hardness equal 75 mg sodium per quart
20.0 GPG Hardness equal 150 mg sodium per quart
40.0 GPG Hardness equal 300 mg sodium per quart
To make a more normal comparison using everyday foods:
One slice of regular white bread has 161 mg sodium
3/4 cup of canned baked beans has 1130 mg sodium
1 tablespoon of catsup has 204 mg sodium
1 medium frankfurter has 610 mg sodium
1 cup of whole milk has 127 mg sodium
So, for water 20 grains hard one would only have 150 milligrams of added sodium per quart of water which is less than one slice of regular white bread!
Overall the amount of salt a water softener adds to ones diet is quite small when compared to the everyday foods folks already eat, but the benefits to house pipes, clothes, skin and hair
are enormous.
But what If any amount of salt is unacceptable
Today there is another choice besides using salt to recharge the resin bed in your softener. Potassium Chloride is commonly used now instead of rock salt to recharge the resin bed.
Potassium Chloride is available at most hardware stores just like rock salt and only cost about $2.00 more per fifty pound bag.
There was a three year study performed by Dr Lynn Woo and her staff at UC Davis using different percentages of water softener discharge water to irrigate different turf grasses with and
the results were very positive. The turf grasses were healthier using percentages of potassium dosed water than without and less watering was needed.
Because of its additional benefits, a growing population of folks are using potassium chloride instead of rock salt in their water softeners
So not only is potassium an important part of ones diet, soft water can also be used for healthier plants, trees and turf!
Craig Phillips
President
http://www.qualitywatertreatment.com