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Table 2 Local use of cocaine in the River Po basin and medium-size Italian cities, as estimated from BE levels in waters

From: Cocaine in surface waters: a new evidence-based tool to monitor community drug abuse

  Estimated local cocaine use
  per 1000 people per 1000 young adultsa
  g/day no. dosesb/day g/day no. dosesb/day
River Po 0.70 ± 0.13c 7.0 ± 1.3c 2.7 ± 0.5c 27 ± 5c
WWTPs d     
Cagliari 0.47 4.7 1.7 17
Cuneo 0.21 2.1 0.9 9
Latina 0.73 7.4 2.6 26
Varese 0.32 3.2 1.4 14
  0.44 ± 0.23c 4.4 ± 2.3c 1.7 ± 0.7c 17 ± 7c
  1. a15–34 yr old
  2. b1 dose = 100 mg
  3. cMean ± SD
  4. dWaste water treatment plant locations