Relatie grondwaterwinning en landbouwgebied ; concentratieverloop bestrijdingsmiddelen onder invloed van grondwaterstroming
Relation between the leaching of pesticides and the concentration in the withdrawn groundwater
RIVM Rapport 725801001
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.