Examined the toilet in the upstairs bathroom and noticed water on the floor. Saw water coming from the handle, removed the lid and noticed that the water level was too high. Cut opened the ceiling below and saw that the subfloor was completely wet. Flushed the toilet multiple times and no active leak occurred. Removed and replaced the pressure regulator, shut off valves, and fill valve inside of the upstairs toilet. The water pressure to the home is set at 65psi.