The part of a sewage works as defined in the Ontario Water Resources Act that treats or disposes of sewage but does not include the part of the sewage works that collects or transmits sewage.
Source
http://www.search.e-laws.gov.on.ca/en/isysquery/c98f5d31-5d2e-47d2-9c41-a7930ae33eef/16/doc/?search=browseStatutes&context=#hit1