Despite the implementation of sewage treatment, overall water quality remained poor, until the major disaster of 23 February 2010, when unknown criminals poured into the river, near Villasanta, the contents of several silos containing oil and other hydrocarbons, all belonging to a company named "Lombardia Petroli".
The commune of San Colombano al Lambro is home to the Denominazione di origine controllata (DOC) wine which includes 100 hectares (250 acres) producing a single red wine.