Pierce County is growing fast, and we are working hard to build the infrastructure necessary to support our expanding population. Sometimes though, that means houses are built on properties that don’t yet have available sewer service. In those cases, Pierce County Code requires builders to install interim on-site septic systems to serve residents’ immediate needs, while also laying pipes, called sewer mains, that will connect homes to the public sewer system as it is expanded.
These homes are described as having “dry lines” because their sewer lines are not connected to surrounding homes or the public sewer system. Learn more about dry sewer lines.