Pharmaceuticals Chemicals of concern: Biologically active agents that can be active at low doses.Affected individuals: Those consuming tainted drinking water, those in production use and disposal sites.Harmful effects: Pharmaceuticals are biologically active with specific disease target endpoints. There are potential health and ecological impacts when many pharmaceuticals are mixed together, when people who are not ill are exposed inadvertently, or when populations are exposed to widely used pharmaceuticals.Alternatives:Pharmaceutical collection programsRedesign of pharmaceuticalsPreferable product selectionChanges to water treatment system