Evidence suggests that the concentrations of DDT in Australian rivers have progressively declined, as indicated by water in the Brisbane River, which consistently fell from maximum concentrations of about 1.7 μg/L in 1972-1973 to not detectable in 1986-1987 (Connell et al 2001). Australian Drinking Water Guidelines 2011
Evidence suggests that the concentrations of DDT in Australian rivers have progressively declined, as indicated by water in the Brisbane River, which consistently fell from maximum concentrations of about 1.7 μg/L in 1972-1973 to not detectable in 1986-1987 (Connell et al 2001). Australian Drinking Water Guidelines 2011