The true statement about the water treatment process is that it removes biological, chemical, and physical contaminants. Water treatment is designed to purify water by eliminating impurities and making it safe for consumption.
Here’s a brief evaluation of the other statements:
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"It generates solid waste that is deposited back into the water supply": This is not accurate; while water treatment does generate solid waste (like sludge), it is typically disposed of properly rather than deposited back into the water supply.
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"It removes contaminants from groundwater only": This is incorrect as water treatment can involve both groundwater and surface water sources.
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"It causes sediment to accumulate in surface water": While sediment can accumulate in water sources, proper water treatment processes are designed to minimize sediment buildup rather than causing it.
So, the removal of contaminants is the main emphasis of the water treatment process.