Monday 3:00 PM
[Presentation PDF]

Room: Emerald

The Trouble with Tribbles: A Wastewater Treatment Facility's Experience with a Fresh Water Sponge Infestation and Methods Used in Control and Eradication

In 2008, staff at the Prescott Valley, Arizona, wastewater treatment plant discovered a fungus-like growth. A sample was collected and sent for analysis. The analysis revealed the fungus was actually a species of freshwater sponge. Initial reaction was the sponges could be beneficial to the process as they probably fed on nutrients left over from the filtration process. However, the sponges continued to grow and multiply and it became clear that some sort of control or eradication would be necessary.

Greg Garbs


John T Bowman - CH2M Hill