Suspected Carcinogens in Drinking Water(6). SURFACE WATER: 14 Heavily Industrialized river basins in US - 1/204 sites pos, 12 ppb . Detected only in hypolimnion of stagnant lake in Japan . SEAWATER: Not detected in surface waters . RAIN WATER: Mainz and Deuselbach, Germany and Ireland 0.111-0.174 ppm ; Enewetek Atoll (Central Pacific) 6.2-11.3 ppb ; 5 sites in California - 1/6 samples pos, 0.06 ppm . ICE FOG: Fairbanks, AK - 0.50-1.16 ppm . MIST: 2 sites in California 0.25-0.56 ppm . FOG: 4 sites in California 0-2.3 ppm . EFFL: Detected in 3 effluent streams, two from chemical plants and one from a sewage treatment plant . Effluent from urea and melamine production contained 4% formaldehyde and from phenolic resin production 0.1% formaldehyde . Effluent of plywood industry which uses phenol and urea-formaldehyde resin glue contains formaldehyde .
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