Dakota County has conducted some of the most thorough local research on private well water quality in the state. Soils and geology make much of Dakota County highly vulnerable to groundwater contamination. Public water suppliers provide their customers with water that meets health standards, but the county's groundwater poses health risks that water suppliers and private well owners must both address.
The county has done this research in order to understand the issues and trends in its groundwater quality, inform private well owners of potential risks and remedies, and develop strategies to address contamination, where possible.
PFAS and Other Contaminants in 97 Private Drinking Water Wells, 2018-2022
Groundwater Quality Research Summary, 1999-2024
2022 Cyanazine Update
Ambient Groundwater Quality Study, 1999-2019
Targeted Drinking Water Quality Study, 2017
Wells and Increased Infant Sensitivity and Exposure (WIISE) Study, 2015-2017
Township Testing - Nitrate in Dakota County Private Wells, 2013-2014)
Hastings Area Nitrate Study (HANS), 1999-2003
Community Sampling Results