Pressure Test Requirements
- Testing by air - All buried piping shall be pressurized with air, to a minimum of 5 pounds per square inch (psi) and held with no noticeable pressure loss for 15 minutes.
- Testing by water - All buried piping shall be filled with water to a point no less than 10 feet above the highest point of plumbing that is buried or underslab. The water level must be maintained for 15 minutes without any noticeable loss of water. (This testing procedure is not allowable in the FHMA treatment section of our system, only an Air Test is acceptable.)