USGS - science for a changing world

Scientific Investigations Report 2008–5027

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2008–5027

Back to Table of Contents

Table 4. Pesticide concentrations in source and finished drinking water from the study water-treatment plant on the lower Clackamas River, Oregon, 2004–2005.

[Pesticide concentrations in micrograms per liter. See p. 3 for more information on the study plant’s water treatment process. Abbreviation: e, estimated value (see Glossary). Symbol: <, less than]

Date Pesticide or
degradate
Source water   Finished drinking water
Remark Value Remark Value
07-21-04 Dacthal (DCPA) 0.005 0.005
09-23-04 Diuron 0.02 0.02
08-25-04 DEET e 0.007 e 0.008
10-20-04 Diuron 0.06 0.04
02-09-05 Diuron 0.06 0.06
Simazine < .005 .006
03-09-05 Simazine < 0.005 e 0.003
04-06-05 Hexazinone e 0.01 e 0.01
05-18-05 Diuron 0.22 0.18
Metsulfuron-methyl < .025 e .06
Hexazinone .022 .02
Atrazine .007 e .006
Deethylatrazine (CIAT) e .005 e .005
Pronamide < .004 .005
Trifluralin e .005 e .005
Simazine .005 e .004
Dacthal (DCPA) e .002 e .002
09-30-05 2,4-D 0.18 0.08
Propiconazole (cis) e .003 e .001
Propiconazole (trans) e .006 e .005
Diazinon .016 < .005
Diazinon-oxon < .006 e .01
Simazine .018 .02
Ethoprop .009 .006
Metolachlor e .005 e .002

Back to Table of Contents

AccessibilityFOIAPrivacyPolicies and Notices

Take Pride in America logoUSA.gov logoU.S. Department of the Interior | U.S. Geological Survey
URL: http://pubs.usgs.gov/sir/2008/5027
Page Contact Information: Publications Team
Page Last Modified: Thursday, 10-Jan-2013 18:43:18 EST