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FREE WEBINAR: Onsite Wastewater Treatment System Drainfield Malfunction: Causes, Investigation, Prevention, and Correction

  • Delaware - Onsite Septic System Contractors
  • Indiana - Professional Engineers
  • Iowa Onsite Wastewater Association - IOWWA - CIOWTS
  • Maine - Plumbing Inspectors
  • Maine - Site Evaluator
  • Maine - Voluntary Certification for On-Site System Contractors
  • Massachusetts - Soil Evaluator
  • Massachusetts - System Inspectors
  • National Environmental Health Association - NEHA
  • New Hampshire - Designers & Installers
  • New York - Land Surveyors
  • New York - Professional Engineers
  • North Carolina - Registered Environmental Health Specialist (REHS)
  • Ohio - Sewage Treatment System Contractors

This live webinar was recorded to view at your convenience.

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The lifespan of an onsite wastewater treatment system drainfield is influenced by numerous factors, including siting, vertical separation distance, maintenance, wastewater flow volume, septic tank volume, as well as other factors. The presentation will review methodologies to diagnose problem site systems. The intention is to have the presentation serve as a learning tool on the potential causes, how to investigate and once the problem is understood then recommending a proper solution. The presentation will review: Malfunction investigation basics, septic tank investigation, function of the tank, drainfield investigation, and malfunction issues and examples.

Speaker Biography

Dennis Hallahan, P.E., Technical Director

Dennis F. Hallahan, P.E., is the Technical Director of Infiltrator Water Technologies. Dennis has over thirty years of experience with the design and construction of on-site wastewater treatment systems. He has authored several articles for on-site industry magazines and has given numerous presentations nationally on the science and fundamentals of on-site wastewater treatment systems. Dennis also oversees a department that is responsible for product research and testing for both Universities and private consultants. 

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