What is the difference between inflow and infiltration?

Both words are used to describe "clean" rainwater entering the sanitary sewer system but they refer to different ways that the water gets into the system.  Inflow means water that enters through improper connections (i.e. gutter downspouts tied into sewer lines), or surface openings (i.e. broken cleanout covers, manhole lids).  Infiltration refers to ground water that gets into the system through cracked or broken pipes below the ground.

Show All Answers

1. What is the difference between inflow and infiltration?
2. Why is it bad for rainwater to get in the sanitary sewers?
3. Can my sump pump be connected to the sanitary sewer?
4. Is it okay for my roof downspouts to connect to the sanitary sewer?
5. What can I do as a homeowner to help reduce I & I?
6. What is the Town doing to reduce I & I?