From Italian journal was not enough the dubious distinction of most polluted rivers in Italy. The act by unknown at that, last February 23, in the Lambro have downloaded hundreds of cubic meters of oil from the storage of the former Petroleum Refinery Lombarda Villasanta in the province of Monza and Brianza, is having disastrous consequences. To give an alarming confirmation of the scientists of the Institute of Water Research National Research Council of Brugherio IRSA-CNR that since the mid-seventies to help quantify the pollution of river water. Scholars, before the fact, had already set at 30% the contribution of the Lambro total load of pollutants that are carried by the Po into the Adriatic Sea. The stream, say by the Institute of the CNR, is decades from one of the main anthropogenic sources of pollution along the great river Po due to urban pressure, industrial and agricultural one of the most developed in Europe. "Despite the difficulty in reaching acceptable quality levels," says Gianni Tartari, responsible Institute of Brugherio, "the situation on the threshold of the second decade of this century gave positive signals with respect to the degradation of water reached in the past." The spillage of oil in the Lambro and fuel oil is done so in an environmentally precarious. Tartars explains how the situation was slowly improving. The air cleaners, in fact, have contributed to a significant recovery of the river, "with the presence of fish, improve the biodiversity of benthic fauna and a more acceptable appearance of water." Nevertheless, "the large amount of hydrocarbons will lead to a long period, a significant impact on the river fauna. The situation is only partly relieved by the flow of the river in recent weeks, due to the high rainfall that characterizes this winter. The rainfall, the researcher says the IRS "may lead, however, only the mobilization of heavy oil may be deposited on the bottom." Lighter ones, however, "are scattered problems by increasing the aquatic biotic communities sensitive to the toxicity of polycyclic aromatic hydrocarbons, aliphatic hydrocarbons and other pollutants more or less soluble largely present in petroleum products spilled in the Lambro. The current hydrological condition of Po can therefore support the mitigation of acute, but does not solve the problem of the long-term ecosystem. The accumulation of hydrocarbons in sediments, in fact, is a source of exposure to toxic substances for a very long time.
As is emphasized by the IRS-CNR, the consequences of a criminal act such as that in the province of Monza and Brianza, meaning "in place of the west-central basin of the Po, has many consequences on the entire ecosystem on which flow there is still much to understand. " But the researchers reiterate how we can right now instead consider the social consequences, as "Intentionally spill a quantity of oil so high that most crime is a cultural tragedy hardly curable." 
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