Permissible limit of Zn in potable water is 5 ppm. If more may cause Nausea,vomiting, loss of appetite, stomach cramps, diarrhoea and headaches. Also make lower immunity And low level of HDL cholesterols.
In natural surface waters, the concentration of zinc is usually below 10 μg/l, and in ground waters, 10–40 μg/l . In tap water, the zinc concentration can be much higher as a result of the leaching of zinc from piping and fittings .
Permissible limit of Zn in potable water is 5 ppm (WHO).
Due to its nature as an essential trace element, oral uptake of small amounts of zinc is essential for survival. The recommended dietary allowance (RDA) for zinc is 11 mg/day for men and 8 mg/day for women ( Stromberg H.E and Agren M.S. Br. J. Dermatol. 1984)
Immediate symptoms after uptake of toxic amounts of zinc include abdominal pain, nausea, and vomiting. Additional effects include lethargy, anemia, and dizziness.
Supriya, Environmental Protection Agency, March 29, 2019 (EPA ) has stated that drinking water should contain no more than 5 ppm of Zinc in drinking water. For detail, please go through literature/online.
Zinc has a lower toxicity rate compared to lead. However, it can cause nausea, vomiting diarrhea and cramps in addition to a metallic taste in the mouth if the individual has a chronic zinc intoxication. There are discussions that the long period of water intake with the presence of zinc might trigger cancer, however, does not appear to be proven.
As a result of the analysis of the fission product mixture from nuclear ; warfare research, it is shown that the total activity measurements in rain and ; drinking water and their evaluation at a maximum permissible concentration for ; isotopic mixtures of unknown composition (10â»â¸ mu c/ml) lead to a ; considerable over estimation of the radiat...
Borehole water is one of the major sources of potable water in most developing countries of the world. Therefore, it becomes imperative to evaluate the continuing portability of these sources of water to the populace. The present study was undertaken to appraise the water quality of selected boreholes in Owerri Metropolis using the water quality in...