The plumbing and collection portion of the system transports wastewater from the structure to the treatment system. For single-family homes, this is the building sewer, while for cluster systems, this is a designed collection system.
The size and components of the collection systems depend on the number of residences, land topography and the type of treatment system. For individual residences or other establishments, a 4-inch building sewer is a simple technology, but it is critical for the long-term operation of the system. When installed properly, the building sewer will function for decades. When not installed properly, this component can be
