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- Inflow & Infiltration (I&I) Program
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A city-wide program to prevent sanitary sewer overflows and sewer back-ups by eliminating storm water and groundwater from entering the sanitary sewer system.
Inflow is storm water that enters the sanitary sewer system through the following:
Infiltration occurs when ground water seeps into sewer pipes through cracks, leaky joints or deteriorated manholes.
The City Code specifically states that inflow and infiltration is illegal.