The Effect Of Water Hardness On Our Health

1616 Words Nov 11th, 2014 7 Pages
Introduction Water hardness is an ongoing problem across the globe. While not detrimental to our health, there are many issues that arise from having hard water in households. You may be asking, what is hard water? Isn’t it all liquid? The “hardness” of water actually refers to the presence of divalent cations, or ions with a +2 charge. In drinking water, these are most commonly Ca2+ and Mg2+ ions (“Water Hardness”). Water hardness can cause a buildup of minerals on surfaces such as dishes, sinks, showers and pipes. While the aesthetic problems are not that important, the buildup in the pipes can be very harmful. The scale that builds up causes utility bills to increase because more energy is required to deliver water to its final destination. Often, water softening systems are installed to combat this problem. Water softening systems can be very helpful in reducing scale buildup in households. Most families are unaware of the hardness level of their water, so it is helpful to get your water tested. There are two common water hardness tests, EDTA and AA. EDTA is a titration based water hardness test. To perform an EDTA test, you have your water sample, and EBT indicator mixed together. This solution will be red because of the ions in the water. You drop one drop at a time into the solution, until the EDTA reacts with all the calcium and magnesium in the water. You will know when you are at this point because the EDTA and magnesium react to form a colorless…
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