The Eugene Water & Electric Board (EWEB) monitors for pesticides, particularly during storm events. While EWEB has detected pesticides occasionally, the levels are extremely small, and well below any regulatory levels or guidelines, if such regulatory levels or guidelines exist.

Nonetheless, this monitoring shows that these chemicals are reaching the water and EWEB is committed to working with farmers, landowners, and foresters to engage in practices that minimize runoff.  EWEB and the U.S. Geological Survey partnered to conduct a study on pesticide occurrence in the watershed during storm events.

Pesticide monitoring is challenging due to the expense and wide range of potential contaminants that could be analyzed for in the laboratory.  In addition, there are not even comprehensive laboratory methods developed yet to analyze for all of the pesticides that may potentially exist within a watershed.  Click here to view results of pesticide monitoring at EWEB’s intake.