Assess and Shut Off Main Water Supply

What happens here

Begin by assessing the condition of the existing plumbing under the sink. Note any corrosion on the valves or supply lines, as well as any shedding material from braided hoses. Also, locate the main water shut-off valve for the house, which may be in an unusual location like a utility closet. Turn this valve fully off to cut off the water supply to the entire house.

Goal: Safely cut off water supply to the sink and identify existing plumbing issues.