Regarding Pharmaceutical contamination in our drinking water, unfortunately, there is not a manufacturer out there that can make any certified claims that they remove/reduce pharmaceuticals from drinking water (see NSF). This is because no standards have been established by the NSF.
However, the Water Quality Association has come out with a statement that POU (Point of Use) water treatment offers the "best protection" for drinking water and that activated carbon (the primary component in our counter top and under sink water filters) has "shown promise in removing many of these contaminants." NSF has not developed standards for testing, because the EPA has not developed allowable limits (MCLs) for any pharmaceutical drugs.
The carbon block units with the most extensive certifications are the Multi-Pure CBVOCSB
and the Bestfilters Countertop
and Under Sink Models
If you're considering reverse osmosis look into the Multi-Pure CBTPLUSRO
NSF statement about pharmaceuticals in drinking water:
"Home filtering systems provide best protection for drinking water."Press Release of Senator Lautenberg - Lautenberg, Boxer Announce Hearing To Investigate Traces of Pharmaceutical Drugs Found In Drinking Water
Pharmaceuticals and Personal Care Products
Pharmaceuticals in Drinking Water - Utah State University and http://breeze.usu.edu/p96304316/
Tainted drinking water kept under wraps