Boiling Water Down Drain Jun 2026

As we go about our daily lives, it's common to encounter situations where we need to dispose of hot water, such as after cooking or washing dishes. One tempting solution might seem to be pouring boiling water down the drain, especially if we're trying to quickly get rid of excess water or clean the sink. However, this seemingly harmless act can have serious consequences for your plumbing system and the environment.

Cold or warm water is notoriously bad at dealing with grease. When you wash a greasy pan with lukewarm water, the fat solidifies almost instantly upon contact with the cold metal of the trap or the cool walls of the drainpipe. Over weeks and months, this forms a thick, cement-like blockage known as a fatberg (the same kind that plagues municipal sewers). Boiling water, however, acts as a solvent. It liquefies grease on contact, allowing it to flow freely through the pipes and into the main sewer line before it can re-solidify. boiling water down drain

For metal pipes only: Pour 1/2 cup of table salt down the drain, followed by a pot of nearly boiling water. The salt is abrasive and helps scrub the pipe walls as the water drains. This is excellent for eliminating odors caused by bacteria film, but it is not for clogs. As we go about our daily lives, it's