some conclusions:

Some conclusions:• Glyphosate and AMPA: re-found in 15 out of 28 small water supply plants, where glyphosate and AMPA were found in 2001/2002.• Glyphosate and AMPA were found in 14 wells and in 1 drilling

located in the bottom of a well => wells are much more vulnerable compared to drillings extracting ground water from deeper reservoir’s.• Glyphosate and AMPA sources are presumably adjacent fields at 5 small water plants. At 4 plants the pollution originated from local

courtyards. The remaining sources were of different characters => every plant - it’s history.• Glyphosat/AMPA concentrations in the well water decreases with increasing distance to possible sources.• The well water were characterized by ground water originating from fractured till.

Background: Glyphosate and AMPA were found frequently in upper ground water reservoir’s in StorstømSmall Water Plants with findings of glyphosate / AMPA.

Plants with findings ofglyphosate or AMPA

Plants with findings 0,1 µg/l

Glyphosate ogAMPA

Plants analyzed forglyphosate/AMPA

number % number %KøbenhavnStorstrømSønderjyllandViborg

28193195199

3383

10

10,719,71,55

015

24

07,812

4 counties 615 54 8,8 21 3,4

Background: distribution of AMPA in 4 counties. (Map- thickness of sediments over chalk)

Background: BAM in small water plants (Map – pre quartenary, green = chalk)

New project implemented in 2005:

•38 small water plants with previous findings of glyphosate/AMPA in Storstrøm

•analytical program - Glyphosate/ AMPA, BAM, coliform bacteria, selected main components (NO3, SO4, Fe++, etc.)

•interview

•Hand drillings, sampling of ground water

•Multivariable statistic work

number Plants detailedinvestigated

Plants sampled 28 12Contact to ownernot possible

2

Plant closed 4Owner will notprecipitate

4

total 38 12

Glyphosate and AMPA re-found in 15 plants out of 28 investigated.

number %plantInvestigatedplants

0,01 -0,1 µg/l

=0,1µg/l Allfindings

active 20 3 6 45inactive 8 2 4 75totale 28 5 10

4 plants closed + 8 inactive = 12 plants not running=>

app. 30% of the previous investigated plants are closed

Distribution of glyphosate/AMPA in different types of plants 28 investigated

plants

numberPlant, typePlants

investigatedFindings findings

0,1 µg/ldrilling 5 0Drilling in well 5 2 1well 18 13 9total 28 15 10

•0,001

•0,01

•0,1

•1

•10

• ja

nu

ar

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bru

ar

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rts

• ap

ril

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j

• ju

ni

• ju

li

• au

gu

st

• se

pte

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er

• okt

ob

er

• no

vem

be

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• de

cem

be

r

• Ko

nc

i µg

/l .

•København •Storstrøm •Sønderjylland •Viborg •Storstrøm ny

Glyphosate/AMPA, sample month and concentration.

Results from 2001/2002 and from Storstrøm 2005

glyphosat/AMPA mod prøveudtagningsdybde

0

2

4

6

8

10

12

14

0,001 0,01 0,1 1 10

glyphosat/AMPA uden fund

Glyphosate/AMPA With outfindings

With findingsconcentration in µg/l

water/sediment Samplesnumber

Samplenumber

MaximumGlyphosat

MaximumAMPA

sediment 26 5 0,05 0,36Water from plant 14 15 0,16 0,54Water from well 1 20 0,72 5,6Water from drain 0 2 0,26 0,2Water, handdrilling

14 5 0,015 0,09

Water from ditch 0 1 0,02 0,11

Glyphosate/AMPA concentrations and groundwater table in hand drillings and wells

Samples analyzed for glyphosate and AMPA

water samples with findings of E.coli and coliform bacteria.71 samples

Hand drilling – findings of coliform bacteria and E.coli against depth of water table in hand drillings. Maximum counted bacteria -160

coliform bacteria i different samples0 20 40 60 80 100

water from plant

water from well

water from drain

water from ditch

water from hand drilling

all samples

%

% coliforme bakterier % E.coli

Coliform against depth to water table in hand drillings

0

0,5

1

1,5

2

2,5

3

0 50 100 150 200

coliforme E.coli

Possible source areas

possible sources

0 1 2 3 4 5

tiling/courtyard

ditch

courtyard

courtyard/field

run way

field

under hedge

number

Concentration and distance to possible scource. Water samples with findings of glyphosate/AMPA from wells and plants.Detection limit 0,01µg/l

distance to possible scource and concentration in plant/well

0,01

0,1

1

10

0 5 10 15 20 25

distance in meter

ko

nc

i µ

g/l

.

glyhhosat AMPA

Geological description Isseg. – ice segmentation in till

Plantnr.

geology fractures Isseg. open macro pores Upper grv.Transport

possiblescource

a1 Till Stronglyfractured

fissil Worm burrows Till field


fissil Worm burrows Till field

a4 Till silt Stronglyfractured

no RootchannelWorm burrows

ML silt sand ditch

a5 Till fractured fissil RootchannelWorm burrows

Till Tiling/ Court yard

a7 Till/sand Stronglyfractured

nej Worm burrowsRootchannel

Till sand Court yard


fissil RootchannelWorm burrows

Till field


fissil RootchannelWorm burrows

Till sand Court yard /field

a12 Till Weaklyfractured

fissil Worm burrows Till Under hedge


fissil RootchannelWorm burrowsdisincrection

Till sand field


no RootchannelWorm burrows

Till Run way/ entrance

a15 Till/ gytja Weakly/Strongly fractured

Poss. fissil Worm burrows Till Court yard


no Worm burrows Sand Till Court yard

some conclusions:

Documents