Contaminants: Over 300 man-made chemicals have been found in British tap water. Water distributors only check for 20 of these.  These range from chemicals in weed killers to dishwasher tablets, there has also been sufficient evidence of the female hormone Oestrogen from the contraceptive pill. There is also a big issue being researched as to how drinking Oestrogen is affecting male fertility. 1. Chlorine – Can cause bladder and rectal cancers, and also asthma. Recently, experts have linked chlorine to breast cancer. 2. Lead – Lead enters tap water through corroded pipes. Lead in drinking water is harmful to pregnant mothers and children. Lead poisoning has been proven to cause learning disorders and severe developmental delays. 3. Giardia and Cryptosporidium – These types of protozoa are responsible for widespread and severe outbreaks of gastro-intestinal diseases. They will make their way in the water system whenever here has been a sanitation breakdown.…