You may not be aware of the fact that, there are some drugs in tap water, that are not meant to be there. Actually these are pharmaceutical in nature, that are mixed into the public water drinking sources through wastewater and improper disposal of medications and other chemical compounds which are found in shampoo, antiperspirant and soap. In some tap water pharmaceutical products that include birth control medication, sex hormone therapy medications, powerful painkillers, cancer medications and antibiotics. The drugs in tap water range depending on the location of the water.