Report of the sub-committee on the environment and health.
Table 4.10
Occurrence of pesticidesin watercourses, with a breakdown in types of catchment
area. The table shows the number of finds out of the total number of samples and the
concentration range in microgramme per litre. The first study was carried out by DMU in
1989-1991. In 1994-1996 a major study was carried out in Funen County. In 1996, the table
includes data from several counties (Mogensen 1998).
Active ingredient/
Type of catchment area
Urban area
Mixed catchment area, clay
Mixed catchment area
Clayey agric. catchment area
Sandy agric. catchment area
Sandy/clayey catchment area
Forest watercourse
Uncultivated catchment area
Springs
2,4-D (H)
1/5; 0.02
6/58; 0.05-0.1
n.d./5
16/78; 0.03-7
5/86; 0.02-0.3
n.d./10
n.d./25
n.d./5
n.d./12
atrazin (H)
5/5; 0.04-0.2
14/57; 0.005-0.4
n.d./5
59/151; 0.01-1
7/86; 0.01-0.08
n.d./10
1/25; 0.07
n.d./5
n.d./12
bentazon (H)
n.d./5
7/58; 0.05-0.3
n.d./5
25/72; 0.01-10
10/25; 0.02-0.2
n.d./10
n.d./25
n.d./5
n.d./12
bromoxynil (H)
n.a.
n.d./58
n.a.
6/47; 0.01-0.5
2/55; 0.02-0.03
n.a.
n.a.
n.a.
n.d./12
clopyralid (H)
n.a.
n.d./58
n.a.
2/101; 0.1-0.4
n.d./10
n.a.
n.d./25
n.d./5
n.d./12
cyanazine (H)
n.d./5
n.d./55
n.d./5
2/97; 0.09-0.3
n.d./25
n.d./10
n.d./25
n.d./5
n.d./12
diazinon (I)
n.d./5
n.d./58
n.d./5
1/5; 0.05
n.d./25
n.d./10
n.d./25
n.d./5
n.d./12
dichlobenil (H)
5/5; 0.02-0.3
15/54; 0.04-0.2
1/5; 0.01
25/62; 0.01-2
2/5; 0.06-0.1
4/10; 0.04-0.06
n.d./25
n.d./5
n.d./12
dichlorprop (H)
3/5; 0.02-0.2
11/58; 0.1-0.2
n.d./5
12/141; 0.01-3
8/76; 0.01-0.6
n.d./10
n.d./25
n.d./5
n.d./12
dimethoate (I)
n.d./5
1/53; 0.1
n.d./5
4/62; 0.08-0.6
n.d./25
n.d./10
1/25; 0.1
n.d./5
n.d./12
dinoseb (H)
n.d./5
n.a.
n.d./5
5/98; 0.01-0.1
n.d./15
n.d./10
n.a.
n.d./5
n.a.
diuron (H)
n.a.
24/54; 0.07-1
n.a.
13/52; 0.02-2
n.d./10
n.a.
n.d./25
n.a.
n.d./12
DNOC (H)
3/5; 0.2-0.7
n.a.
2/5; 0.04-0.2
16/98; 0.01-0.6
3/76; 0.01-0.07
1/10; 0.03
n.a.
1/5; 0.01
n.a.
esfenvalerate (I)
n.d./5
n.d./58
n.d./5
4/43; 0.03-0.2
n.d./25
n.d./10
n.d./25
n.d./5
n.d./12
ethofumesate (H)
n.a.
7/55; 0.03-0.1
n.a.
14/50; 0.03-0.6
n.d./10
n.a.
n.d./25
n.a.
n.d./12
fenpropimorph (F)
2/5; 0.1-0.3
n.d./58
n.d./5
9/67; 0.02-0.4
1/25; 0.05
1/10; 0.1
n.d./25
n.d./5
n.d./12
glyphosate (H)
n.a.
5/5; 0.02-0.2
n.a.
1/1; 0.2
n.a.
n.a.
n.a.
n.a.
n.a.
hexazinone (H)
n.d./5
17/54; 0.04-0.08
n.d./5
17/42; 0.04-4
n.d./25
n.d./10
16/25; 0.07-0.3
n.d./5
2/12; 3
ioxynil (H)
n.d./3
n.d./58
n.d./3
10/64; 0.01-0.3
2/56; 0.01-0.05
n.d./6
n.d./25
n.d./5
n.d./12
isoproturon (H)
2/5; 0.02-0.04
16/54; 0.08-1
n.d./5
38/139; 0.02-3
6/75; 0.01-0.2
2/10; 0.01-0.02
n.d./25
n.d./5
2/12; 0.06-0.2
linuron (H)
n.a.
n.d./58
n.a.
4/42; 0.05-0.6
n.d./10
n.a.
n.d./25
n.a.
n.d./12
MCPA (H)
3/5; 0.03-0.09
13/58; 0.07-0.2
n.d./5
33/149; 0.01-7
8/81; 0.005-0.2
n.d./10
n.d./25
n.d./5
n.d./12
mechlorprop (H)p
3/5; 0.05-4
24/58; 0.08-0.4
2/5; 0.01-0.03
55/149; 0.01-7
9/81; 0.05-0.2
2/10; 0.02-0.07
n.d./25
1/5; 0.02
n.d./12
metamitron (H)
n.d./5
n.d./58
n.d./5
2/53; 1-7
n.d./25
n.d./10
n.d./25
n.d./5
n.d./12
methabenzthiazurone (H)
n.a.
n.d./58
n.a.
1/53; 0.3
n.d./10
n.a.
n.d./25
n.a.
n.d./12
pendimethalin (H)
n.a.
n.d./58
n.a.
2/50; 0.1
n.d./10
n.a.
n.d./25
n.a.
n.d./12
pirimicarb (I)
n.d./5
15/54; 0.03-0.08
n.d./5
6/62; 0.03-0.6
n.d./25
n.d./10
n.d./25
n.d./5
n.d./12
propiconazole (F)
n.d./5
1/53; 0.08
n.d./5
6/64; 0.033-0.8
1/25; 0.03
n.d./10
n.d./25
n.d./5
n.d./12
propyzamide (H)
n.a.
2/54; 0.5-0.8
n.a.
5/66; 0.01-0.2
n.d./10
n.a.
n.d./25
n.a.
n.d./12
simazine (H)
5/5; 0.05-4
10/54; 0.09-0.3
n.d./5
23/145; 0.01-0.03
10/88; 0.01-0.2
n.d./10
n.d./25
n.d./5
n.d./12
terbuthylazine (H)
3/5; 0.01-0.02
16/54; 0.03-0.1
n.d./5
11/67; 0.01-0.1
n.d./25
1/25; 0.01
n.d./25
n.d./5
1/13; 0.4
tribenuron-methyl (H)
n.a.
2/48; 0.008-0.03
n.a.
n.d./53
n.d./10
n.a.
n.d./25
n.a.
n.d./12
n.a. = not analysed; n.d. = not detected. H = herbicide, F = fungicide, I =
insecticide.