SILENT TREATMENT
the City of Toronto has outsourced its pollution problem to nearby Lake Ontario. Contaminants include the obvious culprits — raw sewage and industrial runoff — but also stormwater, which the advocacy organization Lake Ontario Waterkeeper calls “a nightmare of an environmental issue.” During rainfall, water runs along the roads and down the gutters, picking up sediment and mixing with oil, fertilizer and pesticides before disappearing into storm drains and into the sewage system. During heavy storms,
