Question

The maximum permissible limit of nitrates in drinking water is

Answer 1

The acceptable limit of Arsenic in drinking water given by Bureau of Indian Standards is 0.01 mg/l and permissible limit in the absence of any alternate source is 0.05 mg/l.

Industrial effluent limit for Arsenic given by Central Pollution Control Board is 0.2 mg/l.

Answer 2

10 mg/L

The Environmental Protection Agency (EPA) has since adopted the 10 mg/L standard as the maximum contaminant level (MCL) for nitrate-nitrogen and 1 mg/L for nitrite-nitrogen for regulated public water systems. Subsequent reviews of this standard have not resulted in any changes.