). Exposing them to boiling temperatures causes several structural issues:
For decades, a popular piece of household "wisdom" has circulated through family kitchens and DIY forums: "Once a week, boil a large pot of water and pour it down the drain to keep it clean."
Pouring 100°C water down a PVC drain softens the plastic. The pipes can misshapen, sag, or track leaks at the joints. The Threat to Pipe Joints and Glue
Instead, the liquefied grease travels a few feet down your frozen or cool subterranean pipes, cools down rapidly, and solidifies again. This creates a massive, solid blockage deeper in your main sewer line where it is much harder—and more expensive—to clear. Safe Ways to Dispose of Boiling Water boiling water down drain
Wait a few minutes for the heat to work, then pour a second pot.
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Boiling water is generally safe if you have older, heavy-duty plumbing systems, specifically: The Threat to Pipe Joints and Glue Instead,
A slow-draining sink is one of the most frustrating household issues. When water starts pooling around your feet while showering or backing up while you’re doing dishes, it’s natural to reach for the quickest, cheapest fix: a kettle of boiling water.
There was a sound like a distant, wet cough. Then, a low rumble that vibrated through the floorboards. Elias stepped back as the water began to swirl. A tiny vortex formed, spinning faster and faster until it became a miniature cyclone of gray and white. With a sudden, violent gulp, the drain opened its mouth.
Even if the pipes are metal, the rubber or plastic seals and the glue used at joints can be damaged or loosened by the extreme heat. Ineffective for Deep Clogs: This public link is valid for 7 days
. Boiling water can cause these pipes to soften, warp, or sag.
When you pour boiling water over a grease clog:
Cover the drain immediately with a plug or rag (this forces the foam into the clog, not out of the drain). Let the mixture sit for 10–15 minutes. with a large pot of boiling water. Potential Dangers of Boiling Water Down the Drain
Let the water cool down and use it to hydrate your outdoor plants or garden beds.
Then, the phone rang.