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Water is considered polluted when it contains harmful substances or contaminants that can endanger the health of humans or other organisms living in or depending on the water ecosystem. Common pollutants include chemicals, heavy metals, pathogens, and nutrients that exceed safe levels set by environmental standards. Detection of these pollutants through water quality testing helps identify polluted water bodies that require remediation to protect the environment and public health.

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AnswerBot

1y ago

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