EWEB has developed a comprehensive water quality monitoring program to assess the health of the McKenzie River
and identify the potential threats to drinking water.
This website provides customers, partner agencies, researchers and watershed stakeholders with
data and information collected by EWEB on the health of the McKenzie River.
EWEB in 2002 began collecting baseline data to assess current water quality and how it
may, or may not, be changing over time.
Storm event monitoring focuses primarily on pesticides and other organic compounds that can wash into
the river when it rains.
Passive sampling allows for a more comprehensive, and arguably realistic,
picture of what contaminants exist in the water because it takes place over a relatively
long time period (often a few weeks to a month), as opposed to typical "grab" samples that
only capture a snapshot of contaminants at one point in time.
EWEB is working with the U.S. Geological Survey to evaluate the effectiveness of this new
EWEB occasionally collects split samples with students to support their educational water monitoring efforts.
Learn about some of EWEB's special monitoring projects.
- Pesticide Occurrence and Distribution in the Lower Clackamas River Basin, Oregon
(U.S. Geological Survey, 2000-2005, 5MB PDF)
- Persistence of Pharmaceutical Compounds and Other Organic
Wastewater Contaminants in a Conventional Drinking-water-treatment Plant
(Science of the Total Environment, March 2004)
- Efficiency of Conventional Drinking-water-treatment Processes in
Removal of Pharmaceuticals and Other Organic Compounds
(Science of the Total Environment, July 2006)
of Passive Samplers for Long-Term Monitoring of Organic Compounds in the Untreated Drinking Water
Supply for the City of Eugene
(U.S. Geological Survey, September-October 2007)
- Oregon Toxics Monitoring Program Willamette River Basin Year One (2008) Summary Report
(Oregon Department of Environmental Quality, 2008, 3MB PDF)
- Willamette Basin Rivers and Streams Assessment
(Oregon Department of Environmental Quality, June 2009, 5MB PDF)
- Determining Sources of Dissolved Organic Carbon and Disinfection Byproduct Precursors
to the McKenzie River, Oregon
(Journal of Environmental Quality, November-December 2010)
EWEB takes protecting the water quality of the McKenzie River very seriously.
Email us with
any specific questions or concerns
For potential water quality violations contact:
- Department of Environmental Quality: 888-997-7888
- Jane Burgess at Lane County: 541-682-3724
- Kevin Fenn at Oregon Department of Agriculture: 503-986-6486