Minnesota Underground Injection Wells: What you need to know

Prohibition of underground injection wells for hazardous waste disposal: Minnesota Rules (MR) 7060.0600

Septic systems: MR 7080.1050 to 7080.2550 and MR 7081.0010 to 7081.0300

Minnesota Pollution Control Agency (MPCA)

Minnesota Department of Health (MDH)

Minnesota Department of Natural Resources (DNR)

U.S. Environmental Protection Agency (EPA) Region 5

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

• Rules. Minnesota has only Class V underground injection wells within its state limits, as its geology is unsuitable for other well types. The state has not been delegated regulatory authority over the underground injection control (UIC) program in the state. The injection of hazardous waste through underground injection is prohibited in the state.

Minnesota does regulate underground well systems that serve more than a single-family home; service a commercial facility that serves more than 20 people per day; or receive any amount of nonhazardous, nondomestic wastes. Business septic systems require permits from both the state and the U.S. Environmental Protection Agency (EPA), as they are considered Class V wells.

• Administration and enforcement. EPA has retained enforcement authority of the UIC system program in Minnesota. MPCA enforces has rules specific to septic systems as well as general rules for groundwater protection. MPCA regulated large septic systems, while local units of government are responsible for the oversight of smaller systems.

SEPTIC SYSTEMS

MR 7080.1050 to 7080.2550 and MR 7081.0010 to 7081.0300

Subsurface sewage ...