Exposure to chlorine can have many side effects including skin reactions and stinging eyes with some scientists believing it also contributes to a hardening of the arteries. They say that adding it to our drinking water could lead to plaque build-up, coronary problems, and strokes in some people.
There is also an additional concern that a side-effect of adding chlorine to our drinking water could cause cancer. When chlorine is added, it will bind with some organic matter to produce toxic trihalomethanes (THMs), which have been shown to act as carcinogens. Although these are found in limited amounts in our drinking water, they are still deemed to be dangerous
to our health in some scientific and environmental quarters.