Urban areas - source of pesticide-contamination of surface water?

摘要

In the past monitoring for pesticide contamination usually concentrated on ground water rather than on surface water. Between 1985 and 1996 450 groundwater checkpoints were sampled. Only Triazins (Atrazin, Simazin) were detected to a certain extent (10 % of samples contaminated). Furthermore Bentazone and Dikegulac were detectable in well water beside the Rhine. These problems were solved, because most Triazins are banned from market and the waste water treatment of pesticide production plants were significantly improved. Despite former reservations, the situation of ground water contamination seems to be relaxed.