Key Features:

	Much needed water supply for the City of Brockton
	Massachusetts' 1st Desalination Plant, 100% privately funded
	5mgd, expandable to 10mgd capacity using Modular UF and RO units
	16 miles of 20-inch pipe from Dighton to Brockton
	Environmentally sensitive design features

Watermark is providing engineering services to Metcalf & Eddy (M&E) and Inima USA LLC as part of the design and construction management for Massachusetts' 1st Desalination Plant., and 16.7-miles of transmission pipeline from Dighton to Brockton.  The plant will provide a much-needed water supply source to Southeastern Massachusetts, with the City of Brockton as the flagship customer.  Watermark’s Paul Millett, P.E., served as the project manager for this innovative project when employed at M&E, and continues to support the project as a consultant.

The 5 mgd treatment plant, expandable to 10 mgd, includes several noteworthy design features such as a unique and environmentally-friendly intake structure in the Taunton River with a state-of-the-art netting system to mitigate impacts to fish eggs and larvae, with traditional intake coarse screens, sluice gates and fine-mesh passive (Johnson) screens.  Water intake and diluted brine discharge flows and sequences are tidally controlled.  Vertical turbine pumps in the raw water pumping station deliver river water to the plant, which uses the pilot-tested treatment process of Ultrafiltration (UF) with Zenon membranes, followed by high-efficiency (75%) Reverse Osmosis units, supported by 14 chemical feed systems.

The 16.7-mile, 20 inch ductile iron transmission pipeline runs in part through a railroad bed and in part in Route 138, as it traverses Dighton, Taunton, Raynham, West Bridgewater, Easton and connects at a metering vault near Pearl and West Chestnut Street in Brockton.  Extensive coordination was required with all communities, regulatory agencies (EPA, Corps of Engineers, DEP and Conservation Commissions), Massachusetts Highway Department, the MBTA, Executive Office of Transportation and Construction, Taunton Municipal Light Department, and others to gain the approvals needed to construct the pipeline.