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On-Demand Webinars

Part 1 Bacteria


We are exposed to environmental bacteria through everything we do. They are in the air we breathe, on the surfaces we touch and in the water we drink. In groundwater, and in drinking water that meets USEPA standards, environmental bacteria are normally present in relatively small quantities. However, when groundwater becomes contaminated, whether mildly or severely, nutrients are introduced that allows these bacteria to multiply. While small populations of environmental bacteria in groundwater are not a concern as there are no direct regulations regarding them, large populations can create in-well problems such as reduced water quality, and corrosion of steel well casings and column pipe, and drinking water distribution problems such as lead/copper corrosion, loss of chlorine residual, and complaints about water quality.

Microbial occurrence within groundwater systems is similar to human population dynamics - basic needs for growth and persistence must be present for either population to thrive. Microbes look for a hospitable environment that will meet their basic needs for growth, and if conditions are inhospitable, they will pass though the environment looking for more favorable conditions. This webinar focuses on understanding conditions that lead to microbial occurrence and growth within groundwater systems, and describe methods that can be used to determine the potential for their occurrence, quantify their existence, and understand the nature of their presence.

This webinar will highlight:

  • Basic indicators of bacterial presence in groundwater.
  • Methods for quantifying bacterial occurrence.
  • Basic requirements for bacterial growth.
  • Determining the potential for bacterial occurrence and type of bacterial activity.
  • Assessing the potential for borehole and distribution system problems.

Participants will:

  • Learn quick methods to determine the potential for bacteria to be present in groundwater.
  • Understand the environmental conditions that are required for bacterial presence and growth.
  • Become familiar with the methods of microbial entry into groundwater.
  • Gain insight into how to control microbial occurrence within groundwater systems.

Instructors Bio

Andrew Jacque is an environmental engineer who conducts scientific investigations for municipal drinking water systems to determine the root cause(s) of degraded water quality in groundwater wells. His scientific approach uses techniques in the areas of environmental chemistry, microbiology, hydrogeology and engineering to determine whether a water quality problem is the result of an impaired aquifer, preferential flow region in the borehole, faulty or failed casing, or lack of borehole maintenance. His investigations include field sampling for microbiology and water quality, electrochemical analysis of borehole discharge, collection of well pumping and drawdown data, water sample processing and analysis, and microscopy. Results are analyzed based on fundamentally sound scientific principles, from a multi disciplinary perspective, and evaluated in light of additional data such as borehole televising records, geophysical investigations, aquifer studies/maps, related published studies, water system specific studies, and aquifer performance tests.

Andrew received his BS in Civil Engineering from the University of Wisconsin - Madison in 1990. His career took him down the path of water/wastewater treatment and drinking water supply, working directly for municipalities or as a consultant. He returned to the University of Wisconsin - Madison in 2005 to pursue MS and PhD degrees. In 2009, Andrew earned his PhD in environmental engineering with a minor in hydrogeology.

Fee: 299.00 USD Per Webinar

Downloads: Session Slides (PDF)
Record of Attendance Form (PDF)

Number of Participants: Unlimited from a single computer (Broadcast webinar in your conference room or auditorium for no extra charge)

Continuing Education Certificates: Unlimited. $14.95 each. Official CEU certificates are available as an option and only available at the time of webinar participation from Northern Illinois University. Ordering steps are given at time of webinar order.

Access: On-demand, anytime 24/7.
Access Duration: 24 hours.

Discounts: Buy 3 on-demand webinars, and get 3 on-demand webinars for free!

Duration: 90 minutes
PDH Earned: 1.5 hours
Instructor(s): Andrew Jacque, PhD

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