Philadelphia operates a combined sewer system that handles both stormwater and sanitary waste. Built in the 1800s, this system serves nearly 60% of the city. During heavy rain events, which are increasing in frequency due to climate change, the system overloads. When capacity is exceeded, sewage backs up into the lowest drains in your home, typically basement floor drains or toilets. This is not a plumbing failure. It is a systemic issue that affects entire neighborhoods. Homes in Manayunk, Fishtown, and South Philly are particularly vulnerable due to elevation and proximity to the Schuylkill and Delaware Rivers.
Reliance Water Damage Restoration Philadelphia has responded to hundreds of sewage emergencies caused by this infrastructure. We know which streets flood first, which neighborhoods have aging lateral lines, and how to coordinate with the Philadelphia Water Department when main line stoppages occur. Local expertise matters when time is critical. We understand the unique challenges of rowhome construction, shared lateral lines, and basement slab drainage. Our technicians are trained on IICRC S500 standards and Pennsylvania environmental health regulations. When you hire local professionals, you get faster response times and better outcomes.