You sure need a shut off valve, and Daniels Plumbing can make quick work out of this common repair need. You have probably noticed one of these valves leaking before. The bushings naturally fail over time, and a little leak stats, then gets more serious over time. Sometimes these valves are hidden from view, so they are not noticed as a problem until damage is noticeable. Daniels Plumbing can inspect your plumbing and detect problem valves before damage can take a foothold.