What causes sewer blockages?

Locating A Drain Clog: Location Of Blocked Drains Can Be Confusing

DIY Fix For a Blocked Drain or Gully Outside

DON'T LIVE with SLOW DRAINS - Make Your Shower Drain like New In 2 Minutes

How To Clean Blocked AC Drain Causing Water Under The Passenger Carpet

What Causes A Blocked Drain?

Throw it in the sink and the drain will never clog again! 💥(Amazing)🤯

Clogged Drain #148

How to Unclog Any Drain | Ask This Old House

What causes a blocked storm water drain

Unclogging a sewer drain with a plunger (from the outside cleanout)

How To Unclog Drain 4 Ways

How to Diagnose Plumbing Drain Problems | Ask This Old House

How To Locate Clog or Blockage In Plumbing Waste Drain Pipe Without Hiring A Plumber

Slow Sink Drain Kitchen | Not the Trap

Basement Drain Back Up: 1 Minute of Cause & Cures

How To Unclog Stubborn Kitchen Sink Drain,Easy Method You Don't Know But Fixes Blockage In 2 Minutes

DIY Unclogging: How to Clear a Clogged Shower Drain in 5 Easy Steps

Why Water Might Be Coming OUT of Bathtub Drain Instead of Going Down - Plumbing Pipe Problems

I HATE BLOCKED URINALS! 🤢 The WORST type of Blocked Drain