Chlorides occur in all natural water in widely varying concentrations. It is important to monitor Chloride
contents in industrial water as high Chloride content can cause corrosion in boiler & Cooling Plants etc.
In domestic waters, Chloride contents of more than 250 ppm. gives bad taste to drinking water.Indian
standard IS 10500 specifies following limits for drinking water.
Desirable limit ( max. ) : 250 ppm
Permissible limit ( max. ) : 1000 ppm