Wet Weather Flow Offsetting Programs

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• Civica Infrastructure Inc.

• 905-417-9792

• info_at_civi.ca

• https//civi.ca/

• Introduction to Wet Weather Flow Programs

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• What Is Wet Weather Flow (WWF)?

• Wet weather flow (WWF) refers to the increased
  flow in a sewer system during and after a rain
  event. Wet weather flow can include contributions
  from
• Inflow Direct stormwater runoff entering the
  sewer system through things like downspouts, yard
  drains, or improperly connected storm sewers.
• Infiltration Groundwater entering the sewer
  system through cracks, joint failures, or other
  defects in the pipes.
• Learn more at https//civi.ca/assessing-and-creat
  ing-wastewater-system-capacity/

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• Key Differences between Wet Weather Flow and Dry
  Weather Flow

Aspect Wet Weather Flow Dry Weather Flow
Source Stormwater runoff and groundwater infiltration Sanitary sewage and minor groundwater infiltration
Volume Increases significantly during rain events Stable and predictable
Management Challenges Risk of overflows, flooding, and contamination Routine management, preventing blockages
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• Key Benefits of Wet Weather Flow Monitoring

• Prevents sewer overflows
• Improves infrastructure planning
• Enhances regulatory compliance
• Optimizes maintenance efforts
• Reduces emergency repair costs
• Protects local waterways

Learn more at https//civi.ca/assessing-and-creat
ing-wastewater-system-capacity/
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• Civicas Wet Weather Flow Offsetting Process

• Formalize Workplan and Agreement
• Flow and Rainfall Monitoring
• Hydraulic Modelling
• Field Investigation
• I/I Source Evaluation and Allocation
  Determination

• Remediation Planning, Design and Construction
• Construction Inspection
• Property Owner Sign-Off
• Allocation Release

Learn more at https//civi.ca/assessing-and-creat
ing-wastewater-system-capacity/
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• About Civica Infrastructure

• Civica Infrastructure Inc. is an industry leader
  in wastewater and stormwater management
  consulting services.
• We provide solutions to municipalities,
  conservation authorities, government agencies,
  land developers, and civil engineering firms in
  Southern Ontario for managing wastewater
  collection systems and sewer capacity.
• Learn more at https//civi.ca/about-us/

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• Source of Information

• https//civi.ca/wet-weather-inspections-to-find-in
  flow-and-infiltration-ii-part-1/
• https//civi.ca/collection-system-modelling-utiliz
  ing-flow-and-rainfall-data-part-2/
• https//civi.ca/inflow-and-infiltration-and-wet-we
  ather-flow-reduction-of-pilot-areas-part-1/
• https//civi.ca/inflow-and-infiltration-and-wet-we
  ather-flow-reduction-of-pilot-areas-part-2/
• https//civi.ca/inflow-and-infiltration-and-wet-we
  ather-flow-reduction-of-pilot-areas-part-3/
• https//civi.ca/assessing-and-creating-wastewater-
  system-capacity/

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• Contact Us

• Civica Infrastructure Inc.

• 905-417-9792

• Head Office

• 330 Rodinea Rd.
• Maple, ON L6A 4P5

• info_at_civi.ca

• https//civi.ca/

• Branch

• 155 Winges Rd.
• Woodbridge, ON L4L 6C7

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• Thank you