Table 1.

Prioritized compounds from this study, including the 10 compounds with the highest risk quotient (RQ), maximum measured environmental concentration (Max MEC, ng/L), and number of detections (# Det.). The table is sorted by RQ, maximum concentration and detection frequency, respectively.

Compound Name	Compound Class	CASRN	Work-flow	Insturment	Max RQ	Max MEC	# Det.
Cypermethrin	Insecticide	52315–07-8	T	GC	16	33	6
Cyfluthrin	Insecticide	68359–37-5	T	GC	2.5	29	18
Bifenthrin	Insecticide	82657–04-3	T	GC	0.6	5.4	20
Cyhalothrin	Insecticide	91465–08-6	T	GC	0.5	6.3	23
Malathion	Insecticide	121–75-5	S	LC+GC	0.4	236	4
Dimethoate	Insecticide	60–51-5	T+S	LC+GC	0.2	493	27
Diazinon	Insecticide	333–41-5	S	GC	0.2	60	4
Esfenvalerate	Insecticide	66230–04-4	T	GC	0.2	1.9	6
Deltamethrin	Insecticide	52918–63-5	T	GC	0.2	1.0	13
Permethrin	Insecticide	52645–53-1	T	GC	0.1	5.5	2
Sucralose	Food additive	56038–13-2	S	LC	-	>5000	51
Iohexol	PPCP	66108–95-0	S	LC	-	>5000	51
Metformin	PPCP	657–24-9	S	LC	9E-05	>5000	39
2,4-dichlorophenol	Herbicide TP	120–83-2	S	LC	-	>1000	22
Triclopyr	Herbicide	55335–06-3	S	LC	4E-04	>1000	44
2,4-Dinitrophenol	different uses	51–28-5	S	LC	0.003	>1000	1
Tolyltriazole	Corrosion inhibitor	136–85-6	S	LC	-	>1000	45
9-Octadecenamide	Endogenous	301–02-0	S	LC	-	940	26
TCPP2	Flame Retardant	13674–84-5	S	LC	-	930	40
TDCPP1	Flame Retardant	13674–87-8	S	LC	-	890	51
2,4-D	Herbicide	94–75-7	T	LC	5E-05	778	51
Metoprolol	PPCP	37350–58-6	S	LC	7E-05	487	51
Boscalid	Fungicide	188425–85-6	T+S	LC+GC	3E-04	368	51
Diuron	Herbicide	330–54-1	T	LC	0.08	199	51
Fluxapyroxad	Fungicide	907204–31-3	S	LC	3E-05	76	51
DEET	Insect repellent	134–62-3	T+S	LC+GC	7E-07	53	51
fipronil	Insecticide	120068–37-3	T	LC+GC	0.01	14	51
Fipronil amide	Insecticide TP	205650–69-7	T	GC	-	13	51
Fipronil-sulfone	Insecticide TP	120068–36-2	T	LC+GC	4E-04	9.0	51
Fipronil-desulfinyl	Insecticide TP	205650–65-3	T	LC+GC	9E-05	4.5	51
PFHxS3	PFCs	355–46-4	S	LC	-	4.2	51
Chlorthal-dimethyl	Herbicide	1861–32-1	S	GC	5E-07	3.1	51
Dichlobenil	Herbicide	1194–65-6	S	GC	-	-	51
Dithiopyr TP	Herbicide TP	128294–56-4	S	LC	-	-	51

¹Tris(1,3-dichloroisopropyl)phosphate,

²Tris(2-chloroisopropyl)phosphate,

³Perfluorohexanesulfonic acid, T: Target Method, S: Suspect Screening, GC: GC-QTOF-MS, LC: LC-QTOF-MS, TP: transformation product, no toxicity data available or not quantified.