In 2014 private wells in the Washington County study area (one township and one city) were sampled for nitrate. Samples were collected from private wells using homeowner collection and mail-in methods. The MDA completed follow-up sampling and well site visits at 169 wells in 2015. A follow-up sampling was offered to all homeowners with wells that had a detectable nitrate result.
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Minnesota Department of Agriculture (St. Paul, Minnesota)
Minnesota Department of Agriculture