EXPLANATION:Generally, the quality of water for construction works is the same as drinking water.This is to ensure that the water is REASONABLY free from such impurities as suspended solids, ORGANIC matter, and dissolved salts, which may adversely affect the properties of the concrete, especially the setting, hardening, strength, durability, etc. The water quality for construction shall be tested or monitored regularly, as it AFFECTS the overall strength of concrete. For plain and reinforced CEMENT concrete permissible limits for solids shall be as follows:Types of solidsPermissible limitsOrganic matter200 mg/lSuspended matter2000 mg/lSulfates400 mg/lChloride2000 mg/l (for plain concrete)500 mg/l (for reinforced concrete)Inorganic3000 mg/l