~70% for branch line clogs, ~40% for main sewer clogs (without professional equipment). Don’t hesitate to call a plumber if you’re unsure – a full sewer backup into your home costs far more than a service call.
A clogged main sewer line is more than a simple inconvenience; it is a significant plumbing emergency that can lead to hazardous sewage backups and costly property damage. Unlike a single slow sink, a main line blockage affects your entire home’s drainage system. unclog sewer drain