A single tree root the width of a pencil, left alone in a sewer main for a couple of years, can grow into a mat that snags wipes, grease, and debris until an entire block backs up into someone's basement on a Sunday night. Routine sewer cleaning is the unglamorous, unavoidable work that keeps that from happening — and as a Class 1 collection system operator, it is likely the single activity you will perform most often. This guide covers why cleaning matters, the core methods you will use to do it, and the safety habits that protect you and the public while you do it.
Why Routine Cleaning Matters
A sanitary sewer is a gravity-flow (or, for force mains, pressurized) conveyance system that moves wastewater from a source to a treatment plant. It only works as designed when the pipe's interior cross-section stays open. Several things reduce that open area over time: