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Southern Maine Regional Water Supply Master Plan

Wright-Pierce was selected to develop a regional water system master plan for the Southern Maine Regional Water Council (SMRWC). The SMRWC includes seven of the largest utilities in the southern Maine coastal region, serving the most densely populated region of the state. The combined service territory extends nearly 60 miles, from the Maine - New Hampshire border, north beyond Portland.

The purpose of the study was to evaluate the feasibility of interconnecting the systems to create a regional water system. Wright-Pierce developed a regional hydraulic model that integrated individual models from each water system (which includes 1,500 miles of distribution and transmission piping), conducted a safe yield analyses, a regional supply plan, population and demand projections, and GIS mapping.

The model was used to study interconnections between the systems for regionalized, mutual aid and emergency service. The regional water system plan was completed and presented to the public in 2008. The plan will address transmission, treatment, pumping and storage needs, opportunities for sharing resources, and a model for the future formulation of a regional supply authority.

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Project Highlights

Objectives of the Study:

  • Gain a better understanding of the region's water supply
  • Determine if regionalization of public water is beneficial and feasible
  • Evaluate the benefits and opportunities to working collectively to assure a safe and reliable water supply

Hydraulic Modeling and GIS solutions:

  • Developed a regional hydraulic model that integrated individual models from seven separate water system
  • Conducted a safe yield analysis and regional analysis,
  • Developed a supply plan, and population and demand projections
  • Developed mapping of the seven systems’ infrastructure for creation of a utility database