There are two sources of pollution which is pollution of natural and man-made pollution.
Natural pollution is caused by rain, snow melt, floods, wind storms, or by the product operating life of the creatures, including the corpses of them. and is not the main cause of degraded water quality worldwide.
artificial pollution
activity From domestic wastewater (domestic wastewater): is wastewater from homes, hospitals, hotels, schools, offices, containing the waste in the process of living, human hygiene. T
From industrial activities
industrial waste water (industrial wastewater): the waste water from the production base of industry, handicraft, transport. Other than domestic wastewater or sewage and industrial waste water, municipalities do not have the same basic ingredients, which depends on specific industrial sectors.
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