WHAT IS HARD WATER?
Often times when terms like "hard water" and
"water softeners" are discussed, people are left nodding their heads
but thinking, "What in the world are they talking about?" The answer
is actually pretty easy. Hardness refers to the amount of minerals that water
has absorbed from the ground. Most often, hardness refers to the level of
dissolved calcium and magnesium in the water. Water, being the universal
solvent, absorbs a little bit of almost everything with which it comes into
contact. (This is one of the reasons it cleans so efficiently.) Water dissolves
metals, rocks, waste matter, gases, dust and numerous other substances and
continues to contain these substances in a dissolved or suspended state. Since
the source of most community and private water systems are from wells, springs
or surface lakes or rivers, about 85 percent of usable water is considered hard
WHY IS HARD WATER SO BAD?
Water that is hardened does not clean as well as water that is
"soft". When hard water comes into contact with skin, clothes, hair
and bathroom fixtures, it leaves behind a white chalky residue. Not only is the
residue aesthetically unattractive, it can lead to irritation of the skin by
blocking pores. This attracts and holds bacteria that causes chapping and
dryness. Hard water also leaves behind minerals that can alter the true color of
hair and reduce manageability. Hardness also greatly reduces the effectiveness
of soap requiring the use of greater amounts of cleaning products that neither
lather up nor rinse as well as softened water.
Hard water has many other disadvantages outside of the
bathroom as well. Minerals from the water can build up and clog pipes and
appliances, thus shortening the lifespan of water heaters, washing machines and
icemakers. Hard water is also difficult to heat and increases water-heating
costs about 30 percent each month. Moreover, hard water greatly reduces the
longevity of clothes by 15 percent or more.
HOW IS HARD WATER TREATED?
This is where a water softener comes into play
. To soften
water, the minerals that make water hard must be removed. There are several ways
to soften water, but the most commonly used method is the ion exchange method.
In the ion exchange method (or more specifically, cation exchange) water is
softened when water is filtered though a negative charged resin. The negative
charged resin attracts the positive charged calcium and manganese ions until the
softener is regenerated with a strong salt-brine. When the softener is regenerated, the
calcium and manganese ions are removed by backwashing into the septic or
sewer drain. The salt brine attaches weaker bonded sodium to the resin which is
later exchanged for stronger bonded calcium and manganese during the softening
process.
The effects of soft water are dramatic.