"Cancer risk among people drinking chlorinated water is 93% higher than among those whose water does not contain chlorine."

"Chlorine is used almost universally in the treatment of public drinking water because of its toxic effect on harmful bacteria and other waterborne, disease-causing organisms. But there is a growing body of scientific evidence that shows that chlorine in drinking water may actually pose greater long term dangers than those for which it is used to eliminate. These effects of chlorine may result from either ingestion or absorption through the skin. Scientific studies have linked chlorine and chlorination byproducts to cancer of the bladder, liver, stomach, rectum and colon, as well as heart disease, atherosclerosis (hardening of the arteries), anemia, high blood pressure, and allergic reactions. There is also evidence that shows that chlorine can destroy protein in our body and cause adverse effects on skin and hair. The presence of chlorine in water may also contribute to the formation of chloramines in the water, which can cause taste and odour problems. Since chlorine is required by public health regulations to be present in all public drinking supplies, it is up to the individual to remove it at the point-of-use in the home."