TL;DR: To unclog a garbage disposal with standing water, turn off power to the unit first, then work through the P-trap, a flat-bottom plunger, or a drain snake to clear the blockage. If water keeps backing up into your sink or multiple drains are running slow, that...
TL;DR: Yes, a broken sewer line is a genuine health hazard. It releases toxic gases, breeds mold, and exposes your household to bacteria that cause serious illness. If you notice sewage smells, slow drains, or soggy yard patches, get a licensed plumber to inspect the...