Original Broadcast:  December 3, 2018

Slide Decks:

• Cyanotoxin Treatment Introduction Slides
• Chris Miller – Cyanotoxin Treatment Webinar – Dec 2018
• Tom Waters – Cyanotoxin Treatment Webinar – Dec 2018
• Heather Raymond – Cyanotoxin Treatment Webinar – Dec 2018

This webinar will provide state drinking water programs with a better understanding of analytical methods that are available for algal toxins and recommendations for water utilities on how they should interpret the 10-day health advisory. Presenters will provide an overview of cyanotoxin analysis methods, cover the benefits and limitations of methods, and cyanotoxin issues in Salem, OR.

Webinar Agenda:

Drinking Water Treatment Options for Cyanotoxins: Tom Waters Environmental Engineer with U.S. EPA’s OGWDW in Cincinnati, Ohio will provide an overview of drinking water treatment options for surface water systems impacted by harmful algal blooms (HABs). Topics will include cyanobacterial cell and cyanotoxin removal through coagulation, sedimentation and filtration; removal of cyanotoxins by adsorption; cyanotoxin degradation by oxidation; and associated water treatment plant operational considerations.

“Real World” Cyanotoxin Treatment Optimization: Heather Raymond Public Water System HAB Coordinator with Ohio EPA’s Division of Drinking and Ground Waters, There are a variety of treatment processes that can be optimized for cyanotoxin removal and calculators are available to estimate treatment efficiency. This webinar will provide insights on cyanotoxin adsorption capacity and microcystins oxidation that Ohio EPA has gained through real world examples and jar testing and hold time studies conducted using cyanotoxins derived from public water system source waters. Ohio EPA’s treatment technique rules and cyanotoxin treatment guidance will also be discussed.

Monitoring Algal Toxin Treatment Barriers Using Decision Support Software: Dr. Christopher Miller is the founder of Fontus Blue, Inc will cover A case study involving a surface water plant in Ohio with persistent microcystin concentrations in their source water will be discussed, as well as their unique approach using decision support software to monitor and manage their algal toxin treatment barriers during HAB events. The approach has resulted in enhanced operational awareness, efficiency, and successful treatment of microcystin to acceptable levels. Simultaneous compliance challenges associated with other water quality measures (e.g. disinfection byproducts) will also be discussed.