GroundwaterAll subsurface water, as distinct from surface water. Infiltration(1) Penetration of freshwater or groundwater into the sewer system through cracks, defective joints in the pipeline, and holes, or through lateral connections, manholes or inspection chambers. (2) All extraneous waters (storm water and ground water) which enter the wastewater collection system through various sources including, among others, pipe defects, defective service connections, manhole covers, roof leaders, and foundation drains.; results from the movement of groundwater in the saturated zone into the collection system through defects in the components of the system located below the water table.
