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Understanding WET Testing


This webcast, developed by the TNI WETT Expert Committee, discusses Whole Effluent Toxicity (WET) Testing.  Topics that are covered are:

Overview of WET Testing

What is WET Testing
Test Organisms
Test Endpoints
Data Analysis
Test of Significant Toxicity (TST)
West Coast Method

Traceability of WET Testing

Quality Manual and Standard Operating Procedures
Personnel Training
Test Organism Health
Test Design

Assessing WETT Laboratories

WET Testing Laboratory vs Chemical Testing Laboratory
Test Acceptability Guidelines
What to Look For During an Assessment
Common Auditor Findings
Supplemental Information


$65 for TNI members
$80 for non-members

Group rates are available: Each purchased webcast is to be viewed by only one student. If you would like multiple viewers, separate purchases must be made. A group rate of $260 for TNI members or $260 for non-members is available for groups of 5-10 students at a single location. Click here to purchase this webcast at the group rate.

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No certificates are automatically provided with this training. A Certificate of Completion (CoC) ($30 per person) or Certificate of Attendance (CoA) ($20 per person) may be purchased during or after registration or webcast purchase. A passing score of at least 70% must be received on the exam in order to receive CEUs and a CoC. Scores of less than 70% will receive a Certificate of Attendance at no reduced fee. For a CoA you will not need to take the quiz and you will not receive CEUs. To receive your certificate, contact Paul Junio at [email protected] with date of purchase and date of training completion. See FAQs for additional information.


About Webcasts: Upon receipt of your payment, you will receive a special link by e-mail to watch the webcast on your computer. The link is time-limited: you will have full access to the webcast and any associated handouts for 6 months after receipt of payment, at which time the link will expire. Webcasts cannot be downloaded; they are intended for viewing on your computer only during the 6-month window. If you have any questions, please contact Ilona Taunton at [email protected].

2.5 hours


Presented By:

WETT Expert Committee

About the Presenter:

Beth Thompson
Beth is a graduate of the University of South Carolina. She has performed toxicity testing and toxicity identification evaluations for 22 years and has authored dozens of technical reports. She has assisted over fifty facilities in South Carolina and Virginia with site-specific metal limit development. She has given technical presentations at meetings in South Carolina and across the U.S. on toxicity testing issues. Beth is the Technical Director of Shealy Consulting, LLC, and is a member of the WEASC Laboratory Committee. In 2013, Beth received the WEASC Analyst of the year award and in 2016 she won the Water Environment Federation Laboratory Analyst Excellence Award. Beth is currently the secretary of the WEASC Executive Committee. She lives in Lexington with her husband and is the proud mother of a Carolina Gamecock and a Clemson Tiger.

Ginger Briggs
Ginger is the President of Bio-Analytical Laboratories Incorporated of Doyline, Louisiana, which she helped to establish in 1993 and is now the sole owner.  She received a Bachelor’s of Life Sciences degree in Microbiology from Louisiana Tech University in Ruston, Louisiana in 1988, as well as continuing education training in Whole Effluent Toxicity Testing and Toxicity Reduction Evaluations from the University of Texas at Austin and the United States Environmental Protection Agency.  She has 28 years of experience conducting whole effluent toxicity (WET) tests and Toxicity Reduction Evaluations.
Ginger has been involved TNI for several years.  She is a member of TNI’s Small Laboratory Advocacy Group (SLAG), has served on the TNI WETT PT Standards Subcommittee and is full voting member of the TNI WETT Expert Committee.  Recently, she was the lead presenter of TNI’s WETT Assessor’s Forum at the 2016 Forum on Environmental Accreditation/Environmental Measurement Symposium in Orange County, California.

Katie Payne
Katie is an environmental scientist who has a passion for applying toxicology, biology, and ecology to understand, navigate, and solve complex environmental issues.  Katie is the Quality Assurance and Compliance Manager for Nautilus Environmental, an accredited laboratory that specializes in a full range of toxicity testing located in San Diego, CA.  With over 10 years of experience in aquatic toxicity, Katie is well versed in conducting routine and specialized freshwater, marine, and sediment toxicity tests utilizing a variety of organisms.  In her current role, her focus is production of the highest quality toxicity data through development and implementation of the laboratory QA plan and standard operating procedures.  Katie attended the University of San Diego and received a B.A. with dual majors in biology and economics.