Nitrate contamination typically comes from agricultural runoff and fertilizers. The EPA maximum contaminant level is 10 ppm. These systems have the lowest nitrate concentrations.
N/A ppm
Lowest Nitrate Level
NaN ppm
Average (Top 25)
10 ppm
EPA MCL
High nitrate levels in drinking water can be particularly harmful to infants and pregnant women. In infants, high nitrate levels can cause "blue baby syndrome," a serious and potentially fatal condition.
Nitrate contamination is common in agricultural areas where fertilizers and animal waste can seep into groundwater. Minnesota's agricultural regions face higher risk of nitrate contamination.
| Rank | City & System | Nitrate (ppm) | Overall Score | Action |
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