Reduced sewer conveyance and treatment capacity caused by inflow and infiltration can increase wastewater operation and maintenance costs, restrict urban development, and increase potential for environmental spills and overflows.
Various studies have shown that I&I generated from private property can represent over 60% of the total I&I in a wastewater system. This number can be significantly higher in older systems, and presents unique challenges for municipalities, ranging from legal and policy issues to funding and implementation.
As a result, it’s often difficult for municipalities to significantly reduce I&I coming from private properties. But it’s a different story in Ontario, Canada, where Civica
