Pesticides in drinking water. Waters from the Mississippi and Missouri Rivers

Pesticidal Residue in Rural Potable Water

“…This was especially true of large com mercially run agricultural areas. Such farms also showed significantly higher levels of the DDT group (Table 4, 5).…”

Adsorption of toxic and carcinogenic compounds from water

“…Dieldrin was found in 54 of 196 drinking waters tested by the USEPA, at concentrations in the range of l-10 pg/L.7 Of 500 samples of 10 municipal drinking waters obtained from the Mississippi and Missouri rivers, approximately 40 percent contained detectable amounts of dieldrin. 22 Shackelford and Keith" reported finding dieldrin in 29 different water supplies throughout the world.…”

Pesticide Residues in Soil and Water

“…There have also been more local surveys of U.S. rivers (Green et al, 1967;Lichtenberg et al, 1970;Johnson and Morris, 1971), streams (Brown and Nishioka, 1967;Manigold and Schulze, 1969), ponds (Weatherholz et al, 1967) and marshes (Kolipinski etal., 1971) (see Table 11.5). Schafer et al (1969) surveyed residues in drinking water sources. In the United States all of the different organochlorine insecticides have been Lichtenberg et al, 1970Lichtenberg et al, 110 (1967 Surface waters " " 114 (1968) " "…”