Water Well Drilling Contractors in Minnesota

Geology & Depth

Minnesota's thick glacial deposits — sand, gravel, and clay till — provide productive shallow aquifers across the state. Beneath the drift, Precambrian crystalline rock dominates in the north, while Prairie du Chien dolomite, Jordan Sandstone, and other Paleozoic formations underlie the southeast.

Most residential wells in Minnesota are drilled to 165 feet, with a typical range of 40–500 feet. Water table depth: 20-80 feet in surficial aquifers; 100-400 feet for deep bedrock aquifers in the Twin Cities metro.

Permits & Licensing

Minnesota requires all well contractors, limited well/boring contractors, and monitoring well contractors to be licensed by MDH. No homeowner exemption exists.

Permit authority: Minnesota Department of Health (MDH) licenses drillers and oversees well construction; local units of government may have additional requirements. Expect $50-$200 in permit fees.

Primary Aquifer

Surficial Sand and Gravel / Prairie du Chien-Jordan Aquifer / Mount Simon-Hinckley Aquifer. About 22% of Minnesota households rely on private wells, with concentrations in rural areas of central and southern Minnesota.

Best drilling months: April through November; extreme cold and 4-6 foot frost depths make winter drilling very challenging.

Common Water Quality Concerns

Minnesota well water commonly contains: iron, manganese, hardness, arsenic in western Minnesota, nitrate in agricultural areas, radium. A comprehensive water test after drilling (typically $150–$500) will identify which treatments, if any, your well needs.