The City of New Brunswick owns and operates a water system that serves a population of approximately 60,000 in the City. Water is also delivered on a wholesale basis to two adjoining municipalities. The City’s treatment plant is a conventional surface water treatment facility, with a design capacity of 20 MGD, including raw water pumping, chemical pretreatment, flocculation, sedimentation, filtration and disinfection. Filtration facilities include 8 gravity filters and 8 pressure filters. The pressure filters, installed in the 1930’s, were considered to be obsolete technology for surface water treatment
The City engaged HMM to evaluate alternatives for replacement of the pressure filters, as well as to increase plant capacity. HMM recommended a membrane filtration, facility which would initially have capacity to replace the pressure filters, with incremental expansion capabilities to replace the gravity filters, and/or increase total plant capacity to as much as 24 MGD. HMM was then engaged to prepare the detailed design.