How can my basement flood with sewage?

Combined sewers are used to collect both storm water and waste water. During dry conditions, the sewers are able to handle the waste water flow. During wet weather, the sewer may become surcharged due to the volume of storm water which will cause the sewage to back up in your lateral. If there is enough of a surcharge in the sewer, it is possible for the sewage to enter your basement or crawl space. Removal of gutter downspouts and sump pumps from the sanitary or combined sewers will help reduce basement flooding.

Show All Answers

1. How can my basement flood with sewage?
2. How can a backflow preventer stop sewage from entering my basement?
3. Is a backflow preventer required by the City?
4. What about clean water connections to the sewer with a backflow preventer?
5. What about maintenance?
6. Is there any financial assistance available for a backflow preventer?
7. What if I have more questions?