Sewer Plumbing

In the event of a sewer backup, your building floors can be flooded. Sewage drainage piping should be separated from house drainage pipes with an automatic backwater check valve. All official buildings must have drains to keep the exterior of the building dry. Sewage drainage piping should be installed beneath the crown level of the main sewer. The tank should have a discharge capacity of 20 gpm or less. It should be installed where required by the authority.