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Table 1 Arsenic concentrations in various sources of water from the study locations

From: Effects of arsenic exposure on DNA methylation in cord blood samples from newborn babies and in a human lymphoblast cell line

Sources of water Arsenic concentrations (μg/L)
  Study locations
  Arsenic-contaminated site Control site
Well water 298.18 ± 129.60 a nd
(n = 13) 87.36 (1.11-1,475.00)b
Mountain pipe water 25.54 ± 9.02 nd
(n = 10) 6.86 (1.59-75.05)
Local tap water 24.22 ± 17.23 0.22 ± 0.11
(n = 12) 4.86 (0.53-147.60) nd (nd-1.09)
Rain water 1.01 ± 0.20 nd
(n = 23) 0.65 (0.17-2.99)
Bottled water 4.54 ± 0.43 0.20 ± 0.10
(n = 6) 4.20 (3.45-5.85) 0.06 (nd-1.20)
  1. The values are expressed as the mean ± SE (a) and median (min - max) (b).
  2. nd : non detectable.