This enviromental problem is due to the fact that the waters of the subsoil have a very slow pace of renovation.It is estimated that while the average residence time of the water in the rivers is of days,in an aquifer is of hundreds of years what makes its purification very dificult. It is also due to the abuse of nitrogen-based fertilisers to improve agricultural production without adequate controls.
This enviromental problem could be solved by intruducing regulations specifying the type and quantity of pesticides allowed to be used in an area; prohibiting landfills or gas stations in groundwater areas that feed Wells and extraction areas. Also prohibiting operations and farms with confined animals near vulnerable areas of groundwater or prohibiting intensive activities of livestock and agriculture.
Job by : Ruben Garcia Marin y Juan Jose Gazquez Segovia.