Maximum Permissible Concentration of Various Inorganic Elements Present in Potable Water As per WHO & BIS Standards

Maximum Permissible Concentration of Various Inorganic Elements Present in Potable Water

Following are the values of maximum permissible concentration of various inorganic elements present in potable water as per the World Health Organization (WHO) and Bureau of Indian Standards (BIS)

S.NoInorganic ElementMaximum Permissible Concentration in Potable Water as per WHO in mg/LMaximum Permissible Concentration in Potable Water as per BIS in mg/L
1.Arsenic (As)0.010.01
2. Boron (B)0.31.0
3. Antimony (Sb)0.05Not Specified (N.S)
4.Cadmium (Cd)0.0030.01
5. Barium (Ba)0.70N.S
6.Beryllium (Be)N.SN.S
7.Lead (Pb)0.010.05
8. Cobalt (Co)N.SN.S
9.Lithium (Li)N.SN.S
10.Chromium (Cr)0.050.05
11.Copper (Cu)N.S0.05
12.Thallium (Tl)N.SN.S
13. Fluoride (F)1.51.0
14.Sodium (Na)N.SN.S
15.Molybedenum (Mo)N.SN.S
16.Cyanide (CN)0.070.05
17.Mercury (Hg)0.0010.001
18.Ammonia (NH3)N.SN.S
19. Nickel (Ni)0.02N.S
20.Nitrates (NO3)11.345.0
21.Nitrites (NO2 )0.91N.S
22.Silver (Ag)N.SN.S
23.Zinc (Zn)N.SN.S
24.Selenium (Se)0.010.01
25.Phenolic compounds as phenol (C6H5OH)N.S0.001

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