Title:

Merrimack River Water Treatment Facility Sustains Manchester with an Eye on PFAS

Manchester Water Works is developing a new drinking water treatment facility using the Merrimack River as a water source to augment its drinking water supply. The existing supply utilizing Lake Massabesic as the source will not be sufficient to meet the demand of a large growing region indefinitely,while also considering sustainability. The overarching goal of this project was to produce a treated water quality of the new Merrimack River facility that complies with all state and federal regulations and aesthetically is indistinguishable to that of Lake Massabesic treated drinking water. This will ensure social justice and equity among the Manchester residents who utilize each of the public supplies. Through research into permitting procedures, code and regulations, and maximum contaminant levels mandated by the state of New Hampshire, a conceptual process flow diagram for the Merrimack River treatment facility had been designed by the team at the University of New Hampshire. Additionally considered were future contaminants of concern; primarily per-and polyfluoroalkyl substances (PFAS) may become an increasing issue and was therefore allotted room for future expansion to account for treatment. Subsequently, the processes were supplemented with research elements, such as manufacturer availability,to ultimately prepare a preliminary design for the facility that will ensure the Merrimack River treatment facility will remain an effective resource for years to come.

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