How to Identify Your Service Line
Step 1: Locate where your service line enters your home. This is normally located at the lowest level of your home or business visible from a crawlspace or in a utility room. The test area described below, is the most representative portion of the service line that is used to verify material.
Step 2: Identify the test area. Find the water shut off valve and/or pressure reducer valve (PRV). The test area is located between the shut off valve to the floor or exterior wall. The PRV is normally located after the shut off valve.