USGS Scientific Invesigations 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

Table 10. Pharmaceuticals detected in filtered wastewater-treatment-plant effluent, Columbia River Basin, Washington and Oregon, 2008–09. 

[Station names are shown in table 2. Concentrations reported in micrograms per liter. See table A3 for a listing of pharmaceuticals analyzed in filtered-effluent samples and their reporting limits.
Present, presence is verified, but concentration is not quantified. Abbreviations: E, estimated; –, not detected] 

Analyte	Wenatchee		Richland	Umatilla	The Dalles	Hood River	Portland			Vancouver	St. Helens	Longview
Analyte	(2008)	(2009)	Richland	Umatilla	The Dalles	Hood River	(a.m.)	(noon)	(p.m.)	Vancouver	St. Helens	Longview
Acetaminophen	–	–	–	–	–	–	–	–	–	–	–	E 2.6
Caffeine	–	–	–	–	–	0.22	E 1.3	0.65	2.2	–	E 12	E 30
Carbamazepine	0.1	0.098	0.052	0.12	0.047	0.077	E 0.030	E 0.023	E 0.028	E 0.037	Present	E 0.052
Codeine	–	–	–	–	–	0.042	0.17	0.19	0.13	–	Present	–
Cotinine	–	–	–	–	0.098	–	–	–	–	–	0.071	0.15
Dehydronifedipine	–	–	–	Present	–	–	–	–	–	Present	–	–
Diltiazem	E 0.089	Present	E 0.047	–	E 0.042	E 0.056	–	Present	Present	E 0.043	–	–
1,7-Dimethylxanthine	–	–	–	–	–	–	–	–	–	–	E 0.40	E 5.1
Diphenhydramine	0.090	0.059	E 0.025	Present	0.11	0.082	0.075	0.064	0.056	0.10	E 0.033	E 0.031
Sulfamethoxazole	–	Present	Present	E 0.12	–	–	–	–	–	Present	–	Present
Thiabendazole	0.22	0.57	–	–	–	–	–	–	–	–	–	–
Trimethoprim	0.15	0.19	0.10	–	0.11	0.12	0.089	0.079	0.076	0.073	E 0.020	0.072

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

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