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Scientific Investigations Report 2012–5068


Reconnaissance of Contaminants in Selected Wastewater-Treatment-Plant Effluent and Stormwater Runoff Entering the Columbia River, Columbia River Basin, Washington and Oregon, 2008–10


Table 16. Percentage of compounds detected in each wastewater-treatment plant sampled, Columbia River Basin, Washington and Oregon, 2008–09.


[Station names are shown in table 2] 


Compound
class
Total
number
analyzed
Wenatchee Richland Umatilla The Dalles Hood River Portland Vancouver St.
Helens
Longview
(a.m.) (noon) (p.m.)
Detergent metabolites 8 50 38 0 50 50 63 63 63 38 63 63
Flame retardants 17 82 76 76 82 82 82 82 82 82 82 65
Miscellaneous 17 47 24 29 35 24 35 35 47 24 35 53
Personal care products 15 60 33 47 47 53 47 53 47 40 53 80
Pesticides 104 12 12 18 15 13 9 13 9 16 13 15
Plasticizers 4 100 50 25 50 25 25 75 50 50 100 100
Polycyclic aromatic hydrocarbons (PAHs) 9 0 11 0 11 0 11 11 11 0 22 44
Steroids 4 100 100 75 75 75 75 75 75 75 100 100
Pharmaceuticals 14 43 29 36 36 43 43 36 43 43 50 57
Polychlorinated biphenyls (PCBs) 18 44 0 0 0 0 0 0 0 0 6 11
Overall 210 37 25 28 33 29 29 32 30 30 33 40

First posted April 25, 2012

For additional information contact:
Director, Oregon Water Science Center
U.S. Geological Survey
2130 SW 5th Avenue
Portland, Oregon 97201
http://or.water.usgs.gov

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