Environmental Science

•        Chlorides occur in all types of waters.

•        In natural freshwaters the concentration of chlorides remains quite low and generally less than that of sulphates and bicarbonates.

•        The concentration of chlorides in waters can be increased by pollution

•         Domestic sewage contains high quantity of chlorides.

•        Chloride are highly soluble and generally do not precipitate in water.

•        Drinking water limits for chloride is 200 mg /L but it can be tolerated up to 1000mg/L

•        A chloride level about 250mg/Lor above gives a salty test to water.