Hydrostatic Pressure Test
A hydrostatic pressure test is performed on a home or building’s sanitary sewer system to determine if there are leaks present in the plumbing system. An inflatable test ball is inserted into a building or home main line sewer clean out and is then inflated in order to block or plug the main sewer line. The sewer system is then filled with water up to slab level, where the water level is observed for up to 15 minutes. If the system does not fill to slab level, or if the water level begins to drop, leaks are present in the sanitary sewer system. The next phase of testing to identify these leaking sewer lines involves a combination of video camera inspection and static leak isolation testing of the PVC or cast iron sewer system.
Video Camera Inspection
State-of-the-art in-line sewer or drain video camera equipment is used to perform sewer pipe or drain line camera inspection of a sanitary sewer system. The infrared camera is inserted into the system through existing cleanouts, roof vents, or toilet drains to observe and analyze the condition of a sub-slab drain system. Exact locations of obstructions, breaks, stoppages or deteriorated pipes can be determined with sewer camera inspection along with the approximate depth of the pipe.
Static Leak Isolation Testing
Static leak isolation testing is the process in which we use a combination of sewer video camera inspection and hydrostatic pressure testing to isolate and test different sections or areas of an under slab sanitary sewer system to pinpoint exact locations of leaks in the system. Inflatable test balls are inserted into the system through existing cleanouts, roof vents, or exposed toilet drains to perform a hydrostatic test on isolated portions of the sewer system. An in-line sewer video camera is used in the process to assist with the placement of test balls throughout the system and to map out the layout of the sanitary sewer system.