Learn how to handle a serious plumbing mishap that causes flooding in your home. Take immediate steps to turn off water supply, shut off electricity, open windows and doors, protect furniture and valuables, and safeguard electrical appliances. Contact a professional plumber, research reputable companies, check for emergency services, get multiple quotes, and ask for references. Verify insurance and licensure before hiring a plumber. Deal with water damage by documenting it with photos and videos, contacting your insurance company, assessing the extent of damage, removing standing water, and starting the drying process. Repair and restore your plumbing system by identifying and fixing the source of the problem, repairing or replacing damaged pipes, testing the system for leaks, and inspecting and cleaning drains. Address mold and mildew by inspecting for signs, scheduling professional testing, following proper remediation procedures, and checking for hidden mold. Ensure health and safety by wearing protective gear and ensuring proper ventilation.