The sewer separation project on Fleet Street is required through the City's Long Term Control Plan and Supplemental Compliance Plan. The project includes water, sewer, drainage upgrades along with full streetscape rework and other pedestrian enhancements. Funding for this work will come from the Water and Sewer Enterprise Funds and the General Fund.

The Essex and Hampshire Area Drainage Repair Project will replace the current failing drainage system. A preliminary public meeting was held on-site July 9, 2024. Representatives from the City of Portsmouth and the project design firm CMA gave a brief project overview, walked the current drainage system as well as the proposed new system and addressed questions and concerns property owners had. The plan is to correct DOT drainage by clearing a replacing the drain pipe on Hampshire.