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THE BICHEL COMMITTEE

 

 

Table 5.12
Ground-water monitoring,

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Analyses Filters with analyses Filters containing findings Filters containing findings ³ 0.1 µg/l Median values Conc., max.
Pesticide Number Number Number % Number % µg/l µg/l
Atrazine 471 105 7 6.7 1 1.0 0.01 0.12
Desethylatrazine 173 59 13 22.0 1 1.7 0.02 0.22
Desisopropylatrazine 150 53 15 28.3 5 9.4 0.02 0.24
Hydroxyatrazine 46 37 2 5.4 0     0.02
2,4-D 386 94 4 4.3 1 1.1 0.04 0.12
Bentazone 223 62 14 22.6 0   0.01 0.05
Cyanazine 173 59 2 3.4 0     0.02
Dichloroprop 466 104 7 6.7 0   0.02 0.04
Dinoseb 467 105 4 3.8 1 1.0 0.01 0.12
DNOC 467 105 5 4.8 1 1.0 0.02 0.10
Isoproturon 236 62 5 8.1 0   0.02 0.05
MCPA 467 105 10 9.5 0   0.02 0.07
Mecoprop 463 105 12 11.4 0   0.02 0.08
Metamitron 143 57 3 5.3 0     0.01
Pirimicarb 23 11 2 18.2 0     0.01
Propyzamide 18 9 1 11.1 1 11.1   0.11
Simazine 461 105 3 2.9 0   0.04 0.05
Pesticides and metabolites found in ground water in the five land monitoring catchment areas during the period 1990-1997. The median values were calculated on the basis of the median values at the filter level. Pesticides for which ground water is monitored are shown in boldface.