This product is a zip file that contains files that consist of PowerPoint slides synchronized with the audio-recording of the speaker, PDF files of the slides, and audio only (mp3 format) as noted.

The COVID pandemic has had unprecedented and significant impacts on the global community. This session discusses the effects of building shutdowns during the last two years on plumbing systems and water quality. Speakers will address building38operators, code officials, plumbing industry/manufacturers, and researchers on the valuable lessons learned during the pandemic. Specifically, speakers will share water quality data from during and after COVID building shutdowns, identify research gaps, and suggest ways in which current guidelines for building plumbing recommissioning can be improved.

1. Variable Legionella Response to Flushing after Moderate and Long-Term Plumbing Stagnation
   William Rhoads, Ph.D., Eawag, Dübendorf, MD, Switzerland
2. Can Flushing, Superheating and Shock Chlorination Control Legionella after Extended Stagnation?
   Michele Provost, Ph.D., Polytechnique Montreal, Montreal, QC, Canada
3. Plumbing Recommission Guidelines: Lessons from Water Testing during COVID Building Shutdowns
   Andrew Whelton, Ph.D., Purdue University, West Lafayette, IN