Frequent Questions

Is there an ongoing assessment of the nitrate NPDWR standard? The March 2010 6-year review ( lists nitrate as either having a health effects asses

EPA reviewed nitrate as part of the Six Year Review and determined that the 10 mg/L or 10 ppm MCLG and 10 mg/L or 10 ppm MCL for nitrate are still protective of human health.

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