Replace failing fill valve Customer was experiencing a failing fill valve in the hallway toilet on the main floor. Upon arrival I tested the bathroom group to test for mainline issue, after running water for a long period of time only the toilet was being affected. I flushed the toilet and I noticed the fill valve had a bit of a leak, which would cause a slow filling. I replaced the failing fill valve and I tested again by flushing and we restored proper fill. I ensured each drain in the home was draining properly.