Program development, field crew training, and appropriate implementation of main cleaning strategies including ice pigging, unidirectional flushing (UDF), NO-DES, and foam swabbing for a variety pipe materials and legacy deposit/biofilm concerns

 

Distribution System Optimization and Main Cleaning

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.

Examples of Pipe Wall Legacy Deposits and Biofilm that Can Impact Taste, Odor, and Color of Water Served to Customers.

Members of the Confluence team routinely work 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

  • Suez Water, ID

  • 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