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Assessment
What is the maximum contaminant level (MCL) for nitrates in drinking water set by the Environmental Protection Agency (EPA)?
10 mg/L
5 mg/L
20 mg/L
15 mg/L
What health issue can high nitrate levels in drinking water cause, particularly in infants?
Respiratory diseases
Methemoglobinemia
Lead poisoning
Liver damage
Nitrates in drinking water primarily originate from which source?
Industrial discharges
Agricultural runoff
Wastewater treatment plants
Atmospheric deposition
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