If you have a garbage disposal, you have an extra layer of risk. Disposals are often housed in plastic casings and use rubber seals to prevent leaks. Repeatedly hitting these components with boiling water can cause them to melt, crack, or fail prematurely. Does Boiling Water Clear Clogs?
The safety of this action is 100% dependent on the material used in your home’s drainage system. Here is the breakdown. boiling water down drain
If you live in a vintage home built before 1970, you likely have cast iron or galvanized steel pipes. These can technically handle boiling water better than plastic. If you have a garbage disposal, you have