Minnesota Well Code, Statutes, and Rules
What this domain tests
This domain tests the legal side of drilling: licensing, permits and notifications, well logs, setback distances, and the division of authority between the Minnesota Department of Health and the Department of Natural Resources. The exam expects you to know which agency does what and which distances are mandatory.
Core code rules
- Well construction and sealing are governed by Minnesota Statutes chapter 103I and Minnesota Rules chapter 4725. The Department of Health administers well contractor licensing and well records; the DNR administers water-use appropriations.
- A licensed well contractor is required to construct, repair, or seal a well. Licensing carries bonding and insurance requirements.
- A well notification/permit must be submitted through the state well program, and the well log must be filed within 30 days of completion. The log records depth, casing, grout, screen, and water-bearing zones.
- Minimum setbacks include at least 50 feet from a septic tank and at least 100 feet from a soil treatment system (drainfield). Setbacks from sewers, animal lots, and other contamination sources also apply.
Worked example
A proposed well is 45 feet from a septic tank and 90 feet from the drainfield. Both distances fail: the tank requires at least 50 feet and the drainfield at least 100 feet. The well must be relocated, not simply “upgraded” with a taller casing. The reasoning is that setback protects the well from subsurface contamination; casing height does not cure a horizontal separation failure.
Traps that cost marks
- Sending water-use questions to the Department of Health instead of the DNR.
- Treating the 30-day well log as optional or filing it only when the well produces water.
- Mixing up the 50-foot tank distance with the 100-foot drainfield distance.
- Assuming a local permit replaces the state well notification.