We test sewer lines by static gravity test, otherwise known as hydrostatic testing
. A test ball is placed in the main sewer line close to the outer perimeter of the house to block off the line. We then fill up the lines and monitor water level at floor level to determine if the water level drops, which indicates a leak. A "proper" clean-cut (a double or a single two-way) is usually needed to test the sewer lines accurately.
Once a sewer leak is indicated, isolation to determine the exact location of the leak(s) is performed. We also offer camera testing, utilizing video footage to determine the location of the leaks.