This powerpoint presentation begins by providing a brief overview of the increasing occurrence of pharmaceuticals in the water supply, in particular Ciprofloxacin. Research goals are presented and include: remove the pharmaceutically active compound, ciprofloxacin, from drinking water; assess the residual pharmaceutical activity of treated water; and, determine the effects of organic matter on treatment efficiency. Experimental materials and methods included: Ciprofloxacin; organic matter; ozone reactor; peroxone reactor; and, MIC assay. Ozonation results are presented, along with results for MIC assay. Conclusions indicate that: Ciprofloxacin was effectively removed via liquid addition ozonation; organic matter affects ciprofloxacin oxidation and the formation/destruction of intermediate products; residual antibiotic activity was successfully monitored using a modified MIC assay; organic matter content affects antibiotic activity; intermediate oxidation products contribute to antibiotic activity; and, considering treatment efficiency in terms of parent compound removal is not enough. Includes figures.