The maximum prescribed concentration of copper in drinking water is:
(A) 0.5 ppm (B) 3 ppm
(C) 5 ppmv (D) 0.05 ppm
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The maximum prescribed concentration of copper in drinking water is:
(A) 0.5 ppm
(B) 3 ppm ✔✔
(C) 5 ppmv
(D) 0.05 ppm
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