Industrial discharge in storm sewer system in Toronto

The U. S. Environmental Protection Agency's Office of Research and Development's Storm and Combined Sewer Pollution Control Program and the Environmental Engineering & Technology Demonstration Branch, along with the Office of Water's Nonpoint Source Branch, have supported the development of this research for the investigation of inappropriate entries to storm drainage systems. This material is designed to provide information and guidance to local agencies by meeting the following objectives:

1. Identify and describe the most common potential sources of non-stormwater pollutant entries into storm drainage systems.
2. Describe an investigative procedure that will allow a user to determine whether significant non-stormwater entries are present in a storm drain, and then to identify the particular source, as an aid to the ultimate location of the source.