Every year across Canada, billions of litres of clean rain and groundwater is unnecessarily discharged into sanitary sewers and treated at sewage treatment plants. This excess water in sewers, referred to as Inflow/Infiltration (I/I), results in significant costs for governments, which are passed on to taxpayers.

A new report from Norton Engineering Inc., the Institute for Catastrophic Loss Reduction and the Standards Council of Canada provides a basis for developing a National Standard of Canada to help address this problem for existing communities across the country.  

Developing an Efficient and Cost-Effective Inflow and Infiltration (I/I) Reduction Program discusses methods that can be applied for efficient, effective programs designed to address I/I in existing sewer systems.