Billy Bishop runway expansion could degrade Toronto harbour water quality

The province's plan to expand Billy Bishop airport's runway to accommodate jets could reduce water flow in Toronto's Inner Harbour, limiting its ability to flush sewage and pollutants, according to a new city report.

The report warns that recreational activities, biodiversity, and even drinking water could be affected by the expansion. The city raised the concerns as the province moves forward with plans to allow larger aircraft at the downtown airport.