Table 5.

Maximum concentration (ng/L) of pharmaceuticals in surface water by ecozone

QL	Pharmaceutical	Pacific Maritime	Boreal Cordillera	Montane Cordillera	Taiga Plains	Boreal Plains	Prairies	Boreal Shield	Taiga Shield	Hudson Plains	Mixedwood Plains	Atlantic Maritime
5	Acetaminophen	17.5		13.8		17	64	307	24	25	20	124
5	Atenolol	6.7		5		28.7	17.9	245		105	42	24.3
5	Atorvastatin											8.8
1	Bezafibrate					2.9		11.2			7.8	1.1
5	Caffeine	19.4	51.9	9.2	8.4	160	30.5	355	40.1	4018	502	851
0.5	Carbamazepine					17.3	0.75	39.6	1.8	8.1	32.9	37.6
10	Chlortetracycline					12
2	Cimetidine				3.3	5.6	40.9	2.9	5.1		4
20	Ciprofloxacin	37.7									36
2	Clarithromycin				9.4	4.1		69.6			35.3	21.3
1	Clofibric acid	4.1	8.6	2.3			4.4
5	Codeine					14.7		101		62.5	101	9.6
5	Cotinine			6.6		8.5	16.7	46.2	56.6	43.8	31.3	90
2	Dehydronifedipine	9.5		3.3		3.1
15	Diclofenac						35	2.4			38	16
5	Diltiazem							73.1			5.2
10	Diphenhydramine							56		12	14	30
10	Erythromycin							23
5	Fluoxetine	41.7	50.7	18.3		32.4
5	Furosemide										12.5	30.7
1	Gemfibrozil					1.5		16.8		7.1	5.6
5	Hydrochlorothiazide							5.6		37.9	85.9	38.7
20	Ibuprofen							53		367	85	150
10	Isochlortetracycline				13
2	Ketoprofen	307		45.2		4.6	7.3	9.3			3.1	7.2
10	Metformin					93	41	5640	60	6210	2020	5880
5	Metoprolol					7		77			25.6	25.3
5	Naproxen						16.3	75		67.6	120	244
2	Pentoxifylline	4.5						12.7				26.9
10	Ranitidine									15	33	12
5	Sulfamethazine										19.1	24.2
2	Sulfamethoxazole					19		87		9.3	45.7	22
2	Trimethoprim	2.4	4.3			4.3		32		3.9	10.2
0.5	Warfarin	6.9		3.9				2.9			0.51
0.2	17α-Ethinylestradiol							0.45		0.55	0.74

QL, quantitation limit