Heavy traffic is often associated with air pollution but a new study from the University of Toronto suggests it’s a major contributor to water pollution, too. The study, published in the journal Environmental Research Letters, found that chemicals commonly used in vehicle fluids, tires and paints were much higher in rivers next to roads with heavyHeavy traffic is often associated with air pollution but a new study from the University of Toronto suggests it’s a major contributor to water pollution, too. The study, published in the journal Environmental Research Letters, found that chemicals commonly used in vehicle fluids, tires and paints were much higher in rivers next to roads with heavy » The FINANCIAL WORLD