State the main source of water supply which enter into our home? state the impurities present in the water supply?
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river,groundwaterand reservoir
2 sand chlorine
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sources of chemical impurities in water include: gases that are picked up from the atmosphere by rain water and torrent year down porce. decomposing animals and plants found near streams rivers and lakes. industrial sewage and wastewater. high levels of calcium, iron ,magnesium, sodium, and chloride in river water.
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