Peshawar, which is the most populous district of Khyber Pakhtunkhwa Province, Pakistan.
Water was randomly collected throughout Peshawar District (urban= 45 samples and rural=
29 samples). These samples were analyzed for heavy metal (As, Cd, Co, Cu, Cr, Hg, Ni, Pb,
and Zn) concentrations using the atomic absorption spectrometer (Perkin Elmer, AAS-PEA-
700). Heavy metal concentrations in drinking water revealed the highest pollution index (PI) …