Minn. R. 4410.7918
LOCATION OF DRILL HOLES
A permittee shall comply to the extent practicable with the following standards with respect to location of a drill hole. A. A drill hole shall be located: (1) when possible on a right-of-way that has good surface drainage, at a higher elevation than, and at a sufficient distance from cesspools, buried sewers, septic tanks, privies, barnyards, and feedlots or other possible sources of contamination, as provided in the Minnesota Water Well Construction Code, chapter 4725; (2) so that the drill hole and its surrounding area can be kept in a sanitary condition; (3) to exclude all sources of pollution that are known to the permittee, or reasonably should have been known to the permittee, from entering the drill hole; and (4) 50 feet from any building and at least 1,000 feet from any occupied residence or occupied animal barn, or as negotiated with the landowner or tenant, as appropriate.