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  • Cape Cod Groundwater
    Cape Cod Groundwater
    (508) 362-3828
    PO BOX 226, 02630  Barnstable

    Nitrate-nitrogen, is a major component of human wastewater. Nitrogen passes through septic systems virtually untreated and is introduced to the underlying groundwater. Nitrate, is often used as an indicator of drinking water quality. A maximum contaminant limit (MCL) of 10 ppm of nitrate as nitroge…