First, shut off the water supply and dry the outside of the leaking pipe as much as you can. Then, place a rubber patch around the place that is cracked or corroded and use electrical tape and a pipe repair clip to secure the rubber patch to the pipe. If these settings don't fix the low water pressure you're experiencing, call your plumber to determine if your pressure regulator needs to be replaced. Because this type of obstruction can be anywhere under your house, this is another one of those times when you'll want to call a plumber.
Your plumber evaluates your plumbing system, branch lines and water demand to determine if larger branches can provide better water pressure in your home.
