Why Sewer Backs Up When It Rains: Causes and Fixes
A sewer backs up when it rains because stormwater, groundwater, or both exceed the available capacity of a public sewer, private lateral, or drainage system. The resulting surcharge raises pressure in the pipe, sending wastewater toward the lowest available opening, often a basement floor drain, shower, toilet, or cleanout. Key Facts at a Glance Why […]