Le condizioni ambientali del tratto di circa due chilometri del fiume Vedeggio, in territorio di Mezzovico, sono ancora precarie. Una fuga di cemento da un cantiere, lo scorso 19 gennaio, ha rovinato infatti l'intero habitat. "È evidente – ha ribadito Urs Luechinger, presidente di della Federazione ticinese di acquicoltura e pesca – che un aumento dei controlli non è sufficiente".
Luechinger ha poi ribadito oggi, lunedì, sulle colonne del Corriere del Ticino, che "molti inquinamenti avvengono in particolare nel Sottoceneri, nelle zone maggiormente antropizzate e industrializzate. Si deve assolutamente cambiare strategia nei controlli".
L'analisi sporadica dei campioni, prelevando flaconi di acqua, non sembra più essere sufficiente: "Si dovrebbe cominciare a posare delle sonde in grado di misurare i parametri dell'acqua, in particolare il Ph. In ogni momento si potrebbero rilevare le varie perturbazioni chimico-fisiche delle acque".
MABO
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