Loudoun Water is as concerned as you about growing scientific evidence pointing to trace amounts of pharmaceuticals in the water supply. As you may know, we purchase most of our water from Fairfax Water who treats it before distributing it to our system. Fairfax Water applies a multiple barrier approach to treatment using technologies that have shown to remove broad categories of personal care products and pharmaceuticals from the water. Please visit this link to their site for more information.
http://www.fairfaxwater.org/current/special_statement_030808.htm