"If we’re taking it, we’re also drinking it: painkillers, blood thinners, hormones, chemotherapy agents, even cocaine and amphetamines.
Whatever goes into us, also comes out of us, through our own biological effluent, every time we flush the toilet. The excreted drugs pass right through most sewage treatment processes and end up in rivers and lakes, and then in our drinking water." ...CBC
Reverse Osmosis units installed in your residence removes almost all known contaminants that may seep in our water supply, these include pharmaceuticals as well.