What is nitrate?
Nitrate is a chemical found in fertilizers, manure and septic tank liquids. Rain or irrigation water can carry nitrate down through the soil into groundwater. Your drinking water may contain nitrate if your well draws from this groundwater.

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1. What is nitrate?
2. Who is considered a high public health risk from nitrate?
3. Why are pregnant women, infants and others at high public risk?