Western Branch WRRF Influent Splitter Box Replacement

The Western Branch WRRF Influent Splitter Box Replacement Project replaced an old Splitter Box and related diameter piping and connected the new infrastructure into the existing system at WSSC's Western Branch Wastewater Treatment Plant. This project also updated various structures that had been built in the 1970s and were in need of renovation. Additionally, during the excavation of the existing piping and other existing structures, Ulliman Schutte found areas of potential leakage that had to be replaced with new piping and concrete structures.

The benefits offered by this project are two-fold: the increased treatment capacity allows the Plant's infrastructure to keep up with the local community's growing needs while also preventing overflow events, ensuring safer and cleaner waterways. One of the project's main drivers was the growing community, as the existing Splitter Box could not manage the influent flow experienced in wet weather events, which could swell to 120 MGD. The increase in capacity is an important infrastructure enhancement that will allow the region to continue to expand as the DMV and the surrounding area become more populated. This update also protects the surrounding environment by preventing wastewater infiltration into the earth and sanitary overflow events.