Inflow/Infiltration (I/I) is a term used to refer to water other than domestic, commercial or industrial waste water that enters sanitary sewer systems. Inflow includes sources of excess water that flow directly into sanitary sewer systems, and infiltration includes sources of indirect flow of water, for example water that migrates through the ground and enters cracks and loose joints in underground sewer pipes.
The current project concerns development of a “seed” or “foundational” document (henceforth referred to as a foundational document), the purpose of which is to establish a foundation of knowledge and stakeholder insights for the eventual development of a standard. Technical topics have been flagged in the report for the purposes of setting the basis for further discussion.