Il Governo ha previsto di stanziare 1,2 miliardi di franchi nell'arco di 20 anni per fare fronte al problema dei microinquinanti nelle acque. Il 75% della somma verrà raccolta tramite una tassa.
L'importo ammonterà ad un massimo di 9 franchi all'anno per abitante allacciato ad un impianto di depurazione. I sistemi di cui sono dotati attualmente, infatti, permettono di eliminare solo parzialmente le sostanze in questione (tra cui ormoni e medicinali) che hanno effetti nefasti sugli ecosistemi acquatici anche in piccole quantità. La tassa verrà applicata con l'installazione delle nuove tecnologie.
Un centinaio di impianti di depurazione, su 700, saranno in questo modo dotati di installazioni specifiche per depurare ulteriormente le acque.
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