Over the last decade, Ontario’s 444 municipalities have made substantial progress in better understanding the state of their infrastructure. As data on municipal infrastructure assets have been collected, a clearer picture has begun to emerge on the physical state of three major asset classes: water, wastewater, and stormwater.

This information is helping to establish important baseline measurements to evaluate the long-term sustainability of this critical core infrastructure. Despite this progress, there is still much to be done to establish a more complete understanding of the state of Ontario’s underground infrastructure and to develop effective policies to ensure it can cope with the pressures of a growing population, aging infrastructure, and a more unpredictable climate.

This report examines the state of water, wastewater, and stormwater infrastructure for 30 Ontario municipalities. These communities range in size from 13,000 people to over 900,000, and together represent 30% of the provincial population.