Homeowner was having issues with water pressure. The pressure regulator was a builder grade quality and was not properly operating. Tested at 40psi with the toilet running. Shut off toilet and pressure was 70psi. There was a shut off valve close to this that was showing signs of dezincification. The thermal expansion tank was full of water as well and not protecting the system. The toilet in the powder room was constantly running. We made the repairs and tested the system.