Groundwater sampling planned for Anoka County

Water samples from wells in Anoka County will be collected and analyzed for water chemistry over the next two months, according to the Minnesota Department of Natural Resources (DNR).  Samples will also be tested to learn how long the water has been underground.

DNR hydrogeologists plan to collect about 90 water samples for the Anoka County Geologic Atlas. The atlas is a cooperative effort involving staff from the Minnesota Geological Survey, DNR Ecological and Water Resources Division, Anoka County and the Anoka County Soil and Water Conservation District.

DNR staff will contact county residents for permission for well sampling, which involves collecting a water sample and measuring the depth to water in each well. The selection of wells for sampling will be based on geology, location, well depth, and well construction. Water sampled will come from wells drawing water from aquifers at varying depths. Owners of wells that are sampled will receive a report of the laboratory results for their well.

Preserving the long-term quality of the region’s surface and groundwater resources requires that policymakers have access to accurate information based on sound scientific principles. A county geologic atlas is a tool used by county planners, resource managers, and other local government staff when making general planning, land use management, and water resource protection decisions.

The Minnesota Geological Survey has already published Part A of the atlas, which illustrates details of each county’s geology. In 2015, the DNR will publish the groundwater portion of the atlas (Part B). The current plan for the Part B reports will include maps and descriptions of the hydrogeology, cross sections illustrating groundwater conditions and the pollution sensitivity of groundwater in the county.

The DNR county geologic atlas program is funded in part by the Minnesota Environment and Natural Resources Trust Fund as recommended by the Legislative-Citizen Commission on Minnesota Resources and funding from the Clean Water Land and Legacy Amendment.

Read more about this DNR program and see status reports for atlas products.