What causes a private storm sewer lateral backup?

Storm service lateral backups can be caused by a lack of maintenance to your gutters and downspouts. Leaves and debris often clog gutters and only allow a low flow of water to the downspouts. The overflow of water from blocked gutters, misaligned downspouts, missing or damaged gutters will allow the water to enter the home along the foundation wall. The soil surrounding your home becomes saturated and the water may penetrate cracks in the walls and the floor of the basement. 

Service Laterals

The service laterals can also be blocked by roots. Blocked storm water in service laterals will cause backup in footer drains and will also exit (force its way out) the storm laterals and enter the sanitary service laterals through cracks and joint separation. The sanitary laterals are always at a lower elevation so they collect the water that exits the storm sewer laterals.

Show All Answers

1. What causes a public sanitary sewer main backup?
2. What causes a private sanitary sewer lateral backup?
3. What causes a public storm sewer main backup?
4. What causes a private storm sewer lateral backup?
5. How do the footer drains work?
6. What causes footer drain backups?
7. Should I install a backwater prevention valve?
8. Should I consider a special rider added to my homeowner's or renter's insurance policy?
9. What are resident responsibilities?
10. What are City responsibilities?
11. What if a problem occurs?
12. Should I use copper sulfate?
13. Is there a list of contractors licensed with the City?
14. Whom should I call for help?