Residents in and around Sherburne County can get their private well water tested for nitrate at no cost during upcoming clinics hosted by the Sherburne Soil and Water Conservation District in partnership with the Minnesota Department of Agriculture.
Nitrate levels above 1 mg/L are considered elevated, and those above 10 mg/L are known to be harmful, especially for infants and pregnant women. Recent studies also suggest that long‑term exposure to nitrate in drinking water—even below 10 mg/L—may increase the risk of prematurity, birth defects, thyroid problems, and colorectal cancer.
Contamination is most common in agricultural regions with sandy soils, karst geology, or fractured bedrock aquifers. Wells that are shallow, damaged, or older are especially vulnerable.
The Minnesota Department of Health recommends annual testing for nitrate and other contaminants in all private wells. Municipal water supplies are tested and treated regularly, but private well owners are responsible for their own water safety.
Testing your water is quick, easy, and confidential. Just follow these steps:
- Run your cold tap for 5–10 minutes
- Collect at least one cup of water in a clean, sealed container
- Keep the sample cool
- Bring it to the clinic during open hours
Nitrate testing clinics held across the state are made possible through Minnesota’s Clean Water Fund. Clinic attendees receive on-the-spot results and personalized guidance at no cost.
Protecting Minnesota’s water resources has been a defining priority of the Walz administration, reflected in sustained support for practical, locally driven conservation. A cornerstone of that work is the Minnesota Ag Water Quality Certification Program, which has certified more than 1.3 million acres of farmland in practices that reduce runoff, protect waterways, and strengthen long‑term soil health. This progress demonstrates the administration’s commitment to safeguarding Minnesota’s natural resources while supporting farmers and rural communities.
Sherburne County Well Water Testing Clinics
Aug. 29
9 a.m.-noon
Big Lake Township Townhall, 21960 County Road NW
Sept. 26
10 a.m.-noon
Oak Savannah Learning Center in Zimmerman, 16797 289th Ave. NW
###
Media Contact
Cynthia Moothart, MDA Communications
651-420-2637
Cynthia.Moothart@state.mn.us
