which is very much narrow for some elements like Cd (0.01 mg/L), Pb (0.10 mg/L) (ISI, 1982) and Cu (0.050 mg/L).
The deadlier diseases like edema of eyelids, tumor, congestion of nasal mucous membranes and pharynx, stuffiness of the head and gastrointestinal, muscular, reproductive,
neurological and genetic malfunctions caused by some of these heavy metals have been documented
(Johnson, 1998; Tsuji and Karagatzides, 2001; Abbasi, et al., 1998).