Pursuant to the resolution passed by certain State Legislatures including that of Rajasthan under clause 1 of Article 252 of the Constitution, Parliament enacted The Water (Prevention & Control of Pollution) Act,1974 (Act VI of 1974), (hereinafter called the '1974 Act '), to provide for the prevention and control of water pollution, the maintaining or restoring of wholesomeness of water, the establishment 123 of Boards for the prevention and control of water pollution, the conferring on and assigning to such Boards powers and functions relating thereto and for matters connected there with. 'Pollution ', as defined in section 2(e), means "such contamination of water or such alteration of physical, chemical or biological properties of water or such discharge of any sewage or trade effluent or of any other liquid, gaseous or solid substance into water as may, or is likely to, create a nuisance or render such water harmful or inju rious to public health or safety, or to domestic, commer cial, industrial, agricultural or other legitimate uses, or to the life and health of animals or plants or of acquatic organisms".