PERFLUOROOCTANE SULFONATE CONTAMINATION OF DRINKING WATER IN TAMA RIVER, JAPAN : ESTIMATED EFFECTS ON RESIDENT SERUM LEVELS

The analysis of the Tama river in its midstream area located in the south of the Tokyo metropolitan area, at various sites and times, confirmed heavy contamination with PFOS (303 to 440 ng/l) due to the emissions of a sewage treatment plant nearby, which in turn contaminated the surface water and tap water. A pharmacokinetic model predicts that such drinking water contamination is assumed to result in an 8-16 ng/l excess in plasma PFOS levels. Assessment of risks for human exposure.