El-Max Miami t (p) Copper     5.870* (0.003) Mean ± SD 0.90 ± 0.02 0.68 ± 0.08   Lead      9.033* (0.001) Mean ± SD 2.12 ± 0.45 0.32 ± 0.02   Cadmium      19.700* (<0.001) Mean ± SD 0.83 ± 0.03 0.37 ± 0.04   t: Student t-test *: Statistically significant at p ≤ 0.05

Table 3: Comparison between the two studied groups according to Copper, Lead and Cadmium, μg/L.