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Distribution System Optimization and Main Cleaning

Confluence has been involved in numerous projects focusing on distribution system water quality optimization.  Working with large, medium, and small systems around North America, Confluence has helped these systems meet national and local regulatory requirements while balancing aesthetic water quality and distribution system operational goals. By taking a holistic view that addresses finished water quality, pipe scale stability, and O&M practices, we can help identify water quality risk factors and prioritize mitigation strategies. Using our significant field experience, we can help plan and implement strategies and provide training for field and utility crews.

Melinda Friedman  directed teams of national experts and developed two of the leading distribution system optimization industry Guidance Manuals:

These manuals were used by the AWWA Partnership for Safe Water to develop a national, voluntary, distribution system water quality optimization program consisting of numeric criteria and self-assessment tools for continuous improvement.

Members of the Confluence team have also worked closely with individual utilities to help them assess impacts of their current treatment, operations, maintenance, construction, engineering, and monitoring programs on distribution system water quality.  Specific clients include:

  • City of Flint, MI
  • Cities of Woodland & Davis, CA
  • City of Turlock, CA
  • City of Sacramento, CA
  • York Region and Town of Newmarket, ON
  • City of Hamilton, ON
  • City of Calgary Waterworks, AB
  • City of Hillsboro, OR
  • Willamette Water Supply Program, OR
  • Eugene Water and Electric Board, OR
  • Portland Water Bureau, Portland, OR
  • Tualitin Valley Water District, Hillsboro, OR
  • City of Tallahassee, FL
  • Park City Municipal Corporation, UT
  • Granger Hunter Improvement District, West Valley City, UT
  • Nob Hill Water Association, Yakima, WA
  • City of Everett, WA
  • City of Bellevue, WA
  • City of Mercer Island, WA
  • City of Lacey, WA
  • City of Longview, WA
  • City of Issaquah, WA
  • City of Marysville, WA
  • Anchorage Water and Waste Water Utility, AK
  • Cincinnati Water Works, OH

 

Ice pigging

Ice Pigging

Training Flushing Crews

Training Flushing Crews

Assessing Swabbing Performance

Assessing Swabbing Performance