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<br />.-' <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />Nonylphenol diethoxylate [NPE02] (detergent metabolite) <br />Nonylphenol monoethoxylate [NPE01] (detergent metabolite) <br />3b-Coprastanol (fecal steroid) <br /> <br />Sampline Points <br />Source water (pre-SWTF) <br />Treated water (post-SWTF) <br />Hospital discharge <br />WWTP headworks (pre- WWTP) <br />Primary clarification <br />Aeration <br />Secondary clarification <br />Filtration (sand/mixed media) <br />UV disinfection <br />WWTP discharge I (to San Marcos River) <br />WWTP discharge 2 (to reclaim water system) <br />San Marcos River (upstream of effluent outfall) <br /> <br />Analvsis <br />Southwest Research Institute (SWRI). Analysis by HPLC/MS and GC/MC <br /> <br />Results <br /> <br />November 2004 <br />