Waste water from industrial
Waste water from factories, including wastewater from cooling systems, production systems. Residential buildings and the Shop and canteen that mingle may be alkaline acid inorganic compounds organic compounds. Various chemicals, heavy metals Toxic substances Clay, sand and other sewage which when left in the River, canals, increase the quantity of those substances or toxic to the living organisms in the water. A foul rotten birth color. The smell and not worth seeing
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