Rapport in het kort
In this part of the study it concerns pumping stations
which extract groundwater from so-called phreatic aquifers. These stations
are characterized as the most vulnerable extractions. For a pumping site
the recharge area and the development of the concentration were calculated.
There has been a sensitivity which was adapted to the values of
measurements. The half life is the most important factor affecting a spread
in groundwater quality. A ban of the use of pesticides will not lead in all
considered scenarios to a reduction of the concentration at a short time.
Several limitations and uncertainties are attached. The effect of the
neglects and simplifications implies an indicative
result.
