Call for toilet backing up occasionally. Spoke with David and he explained that this issue has occurred several times over the course of a couple years. Toilet will be slow to flush, and happens every six months or so. Inspection revealed: Toilet line is clear. Ran sinks for greater than five minutes, flushed toilet several times. Toilet is secured properly, but fill valve is failed. This is allowing water to trickle in to toilet constantly, which could lead to overflow during a backup. Water pressure is high upstairs. Checked pressure at water heater and found it to be 90 psi. Tankless is approximately five years old and has not been serviced for flushed. Home was built by David five years ago. Plumbing is new. Drain and sewer is pvc, waterlines are pex A and pex B. Prv is builders grade urn Wilkins. Heavy sediment build up in toilets. David So brought up concerns with the sump pump in the basement, which clears water from the side of the house. If it fails it results in a flood
