PTMUA users that have fixtures below grade due to a basement, a split-level home or low home elevation, please read the following information to avoid any potential issues: The PTMUA is not responsible for sewage back-ups in your house. If any part of your home is below the elevation of our sewer main and you have a fixture(s) (e.g., toilet, washing machine, sink, etc.) installed in this area, the PTMUA recommends/suggests that you have a back pressure valve installed on your sewer pipe, or on the individual fixture(s) located in that area. If you have any questions, please feel free to call (609) 894-4343.