Infiltration and inflow (I&I) are terms used to describe the ways that clear water (groundwater and stormwater) enter the sanitary sewer system. Excess water from I&I can overwhelm the sewer system, leading to overflows and increased treatment costs. Through proactive measures, regular inspections, and help from our community, we can combat I&I. 

  • Excess water from I&I overwhelming the sewer system can lead to sewer backups into homes,

    which are unpleasant, stressful, and pose potential health risks and property damage.

  • Overflows can release untreated sewage into the environment,

contaminating waterways and present health hazards. 

  • Treating the additional clean water from I&I increases

operational costs at wastewater treatment plants. 

  • Additional water in the sewer system increases the need for larger

and more expensive sewer pipes and treatment facilities.