is primarily about repeated exposure, large quantities of extremely hot water, unsuitable plumbing materials, or an existing plumbing problem.
Simply avoid making it a regular habit.
What About Older Plumbing?
Extra caution can make sense in older homes, where plumbing materials and connections may differ from modern installations.
If you don’t know what your pipes are made of, there’s little reason to experiment with extreme temperatures.
Normal hot water is generally sufficient for household cleaning.
The Better Kitchen Sink Habit
Instead of relying on boiling water to “clean” your drain,
