If you want the best for your family then you should install a water system that could filter out some contaminants and other pathogens which could cause illness. This kind of system will benefit you and your family in a lot of aspects like health, financial and environmental.
The biggest benefit of having a drinking water purification system is that you have peace of mind that you are having a good quality of water. You don't need to buy a lot of those bottled water anymore. With the onset of such usage, you would have a dramatic effect on your savings too.
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Bacteria re-growth is one thing that is usually so hard to eliminate. With water traveling from one point to another, the only way to filter it is when it reaches your home. There are also some chemicals in most drinking water that could cause different kinds of illness/sickness.
Drinking is not only the use of water. You also have to make sure that it is clean for every kind of usage. Hard water is not just unhealthy but also not good for your plumbing system, tub, and other appliances.
In bathing, you may find that excessive chlorine could leave your hair very dry and your skin itchy. For those who are sensitive to chlorine, the odor could be a very good allergic potential. Make sure you have a good shower filter in your home as well.