Protecting Groundwater in Anoka County

In Anoka County, 330,000 residents (94%) depend on groundwater for drinking water, using about 12 billion gallons annually. Wells (residential, commercial, agricultural, and industrial) that are unused and unsealed pose a significant health and safety hazard by creating a direct conduit to introduce contaminants (e.g. pesticides, nutrients, pathogens) into groundwater supplies. The highly permeable sands of the Anoka Sand Plain are likely a significant source of groundwater recharge for several of the major aquifers that supply water needs throughout the Twin Cities Metropolitan Area. Visit the Minnesota Department of Health webpage for more information on well sealing in MN. 

Photo: Drinking Water Supply Management Area Vulnerability in Anoka County
Photo: Pollution Sensitivity in Anoka County

Anoka County was one of the few counties in Minnesota that lacked a program to assist landowners with paying to seal unused wells. In response, ACD established a well sealing cost-share program, using a FY20 Clean Water Fund (CWF) grant. As awareness of the program grew, demand increased, highlighting the need for such financial assistance. Since 2020, ACD's well sealing program has made significant progress. ACD staff has worked with hundreds of landowners, promoting and educating on well sealing, resulting in the sealing of 67 high-priority unused wells.

Photo: Unused wells sealed with ACD's well sealing cost-share program, 2020-2024

Unused wells remain to be an issue that threatens Anoka County's groundwater resources. ACD's current CWF grant expires at the end of this year but the district has applied for another round of funding to continue the well sealing cost-share program. Through administering the last grant, ACD developed working relationships with licensed well sealers and partnerships with neighboring cities to advertise the program. ACD's goal is to build on previous successes, ensuring ongoing protection of Anoka County's groundwater resources. By focusing on high-priority wells, providing financial incentives, and leveraging existing outreach efforts, the well sealing program will mitigate groundwater contamination risks and enhance public health and safety in Anoka County in a cost effective way. For more information contact Kris Larson,Water Resource Specialist, at This email address is being protected from spambots. You need JavaScript enabled to view it.

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Fall Lakeshore Stabilization on Martin Lake

Project Features:

  • A coconut fiber biolog was installed on top of the previously installed coir-log to raise the elevation.
  • The void space was filled with brush bundles and topsoil.
  • Topsoil was graded by hand.
  • Erosion control fabric was installed over the other project features to hold in place.
  • Live staked above coir logs with Red osier dogwood.
  • Native plants were planted along the top of bank to provide aesthetics, wildlife habitat and additional stabilization.
Photo: Lakeshore stabilization site on Martin Lake, planted with native sedges and wildflowers.

Pollution Reduction:

  • Phosphorus reduction: 0.616 lbs/yr
  • Sediment reduction: 1,450 lbs/yr

Cost-share funding was provided from BWSR SWCD Aid and a contribution from the landowner. ACD provided project administration, design, and project installation.For more information contact Kris Larson, Water Resource Specialist, at This email address is being protected from spambots. You need JavaScript enabled to view it. 

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Dispose Your Household Hazardous Waste Today

When residents begin to get their homes ready for the upcoming winter season, they may find household materials that may pose a hazardous risk to the environment and public safety. The fall is a great time to get rid of these unwanted item in a safe and easy way. Unusable or unwanted chemicals are considered household hazardous waste when their disposal poses an environmental or health threat. When disposed of in the garbage, down the drain or on the ground, some household chemicals can threaten our environment, harm garbage collectors or hurt you. 

Most household hazardous wastes are hazardous because they are flammable, corrosive or toxic. Characteristic words indicate the type of hazard posed by a product - flammable, corrosive or toxic. Look for the signal words on the label. Signal words - caution, warning, danger, poison - indicate the product's degree of hazard. To help protect the environment and your health, choose the least hazardous product to get the job done. For more information contact Kris Larson, Water Resource Specialist, at This email address is being protected from spambots. You need JavaScript enabled to view it. 

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Cedar Tree Revetment's Lasting Impact on the Rum River

Cedar tree revetments are a low cost, environmentally friendly option to address eroding streambanks. Cedar revetments use Eastern red cedar trees to serve as natural armor, providing protection along eroding riverbanks. Revetments will slow or stop erosion during the project's lifespan and reduce the likelihood of a much larger and more expensive corrective project in the future. Riverbank erosion contributes sediment and other pollutants into waterways, reduces riparian habitat, and results in property loss. Stabilizing your eroding riverbank will provide water quality benefits as well as protect your property. 

Photo: ACD staff with Conservation Corps crew members anchoring a cedar tree into the riverbank. A post pounder is used to drive the tree anchor 3+ feet into the riverbed. 
Photo: Trees are limbed on one side so the trunk is seated into the riverbank. The trees are anchored at the toe-of-bank with the tops of the trees facing downstream. 
Photo: Before conditions of a riverbank at Rum River Woods park with moderate erosion. If left alone the riverbank will continue to erode and likely get worse overtime.  
Photo: After conditions of the Rum River Woods riverbank showing an installed cedar revetment. The revetment provides erosion protection by shingling the trees together, creating a continuous wall.

For more information contact Kris Larson, Water Resource Specialist, at This email address is being protected from spambots. You need JavaScript enabled to view it.

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Buffer Law Continues Making Headway

Nearly a decade after Minnesota's buffer law was enacted in 2015, 99.8% of parcels adjacent to Minnesota waters are in compliance with the law. Buffers are also known as a riparian filter strip adjacent to a stream, river, lake, or wetland. These buffers filter out phosphorus, nitrogen, and sediment. Studies completed by the Minnesota Pollution Control Agency show that buffers are important for protecting and restoring water quality, natural stream functions, and aquatic habitat and life. Buffers are required along public waterways and ditches. Public waterways include lakes, rivers, and streams. This type of waterway requires a 50-foot average buffer. Buffers of 16.5 feet are required along public ditches. 

Photo: This map reflects buffer law compliance rates across Minnesota's 87 counties.

ACD was proud to announce that Anoka County was 100% compliance back in fall, 2020. This milestone was achieved through strong partnerships between Anoka County, ACD, local landowners, and BWSR. This achievement doesn't mean that the hard work is over but it does represent a great success and displays the impact that strong environmental policy can have across the state of Minnesota. The next phase, includes another ACD review of properties throughout Anoka County to identify non-compliant parcels. This review began in Spring, 2024 and is based on recently released aerial photos. Compliance status and progress is tracked using the Buffer Compliance and Tracking Tool (BuffCAT), a state developed GIS database and mapping system.

Transfers in property ownership and land management changes, will require ongoing efforts by ACD in order to maintain existing compliance and to bring other parcels into compliance. Many landowners with noncompliant parcels have plans in place to seed the sites, or to implement an alternative conservation practice that provides comparable water-quality benefits this spring. Visit the ACD website to learn more about Buffer law implementation or contact Kris Larson, Water Resource Specialist, at This email address is being protected from spambots. You need JavaScript enabled to view it.

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