Drain Fix: Boiling Water Down

When you pour boiling water into a PVC drain, you are exceeding its heat rating by over 70 degrees. This can soften the plastic, cause the joints to expand and leak, or even warp the pipes over time. 2. Metal Pipes (The Safe Zone)

When you pour a gallon of water at 212°F (100°C) down the drain, three things happen in rapid succession: boiling water down drain