Peak Performance: Peaking Factors in Sewer Design and Evaluation
THURSDAY, October 23, 2025 | 12pm EDT, 11am CDT, 10am MDT, 9am PDT
Webinar Series Overview
The peaking factor is a familiar concept to wastewater professionals. Various peaking factor guidelines are used to design new sewers, and these guidelines are well accepted. As such, the peaking factor can also be applied as a Key Performance Indicator (KPI) to evaluate the performance of existing sewers by comparing observed vs. expected peaking factors. Those with higher-than-expected peaking factors in wet weather indicate areas with excessive rain-dependent infiltration and inflow (RDII). This webinar covers several popular peaking factor equations in use today and details their historical development from the early 20th Century to present. Part sewer design, part sewer history, part sewer sociology – this webinar adds a deeper layer of perspective and context to our understanding of peaking factors and their role in sewer design and evaluation.Professional Development Hour (PDH) Documentation Requirements
For interested webinar participants, ADS will provide documentation for professional development hours, subject to the following conditions and limitations:
- You must register individually, sign-in individually, and attend the live webinar in its entirety so that we have the means to validate your attendance and participation for continuing education purposes. We cannot provide PDH documentation for partial attendance, for viewing the webinar archive after the live webinar, or to individuals that watched the live webinar on another attendee’s screen without staying signed in for the duration of the webinar.
- Most organizations do not specifically approve continuing education providers. However, it is your responsibility to determine whether this webinar meets the guidelines set forth by any particular organization.
- Some organizations require the use of pre-approved continuing education providers. ADS is not a pre-approved provider for any particular organization, and this webinar should not be claimed as required continuing education for such organizations.
Duration: 45 minutes with up to 10 minutes of Q&A to follow

Speaker: Kevin Enfinger, P.E.
Kevin is a Senior Product and Region Engineer at ADS Environmental Services with over 30 years of experience in environmental engineering and consulting. He holds a Bachelor of Science in Chemical Engineering from the University of Florida and is a Registered Professional Engineer in Alabama and several other states. He is a member of the American Society of Civil Engineers and the Water Environment Federation.
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