Nitrate is a form of nitrogen naturally found in soil and groundwater. Fertilizers, manure, and sewage can elevate nitrate levels, especially in rural areas or private wells. High nitrate levels can be harmful, as they interfere with red blood cells’ ability to carry oxygen. Infants are particularly at risk, potentially developing “blue baby syndrome,” a rare but serious condition. The EPA’s maximum level for nitrate in drinking water is 10 mg/l. Regular testing is essential to ensure safety.
