Table 2.
Sampling rates (Rs) for each analyte found in the literature were used to calculate observed concentrations of analyte found in wastewater. Time-weighted average (Cw; ng/L).
| Analyte | Sampling rate (Rs) | Source | Cw (ng/L), median (IQR) |
| 1,7-Dimethylxanthine | 0.046 | Bartelt-Hunt et al [23] | 848.41 (572.09-2148.04) |
| Acetaminophen | 0.048 | Bartelt-Hunt et al [23] | 2449.80 (1363.87-7337.70) |
| Caffeine | 0.044 | Bartelt-Hunt et al [23] | 19 078.02 (9424.05-29,977.54) |
| Cotinine | 0.034 | Bartelt-Hunt et al [23] | 259.51 (128.79-563.98) |
| MDMAa | 0.222 | Yargeau et al [24] | 2.41 (0.24-4.14) |
| METHb | 0.231 | Yargeau et al [24] | 63.03 (25.27-181.71) |
| Morphine | 0.261 | Yargeau et al [24] | 11.36 (7.65-40.80) |
| Hydrocodone | 0.050 | Alvarez (personal communication) | 43.09 (19.66-74.61) |
| Methadone | 0.408 | Yargeau et al [24] | 5.27 (1.49-12.49) |
| Oxycodone | 0.152 | Yargeau et al [24] | 13.25 (6.36-19.02) |
| Temazepam | 0.421 | MacLeod et al [25] | 8.14 (3.95-17.97) |
aMDMA: 3,4-methylenedioxymethamphetamine.
bMETH: methamphetamine.