Your water heater’s Temperature and Pressure Relief (TPR) valve should rapidly discharge excesses of superheated water or steam to prevent a dangerous pressure buildup. This one has had a small diameter copper tube that’s kinked plumbed onto it. This is a dangerous situation, as this tube simply can’t pass large water or steam volumes quickly. This will be a quick and easy fix for a plumber, but one that’s critical from a safety standpoint! It’s a great idea to hire a home inspector to help keep you and your family safe in your new home!