Approval of injection wells

Approval of injection wells. (1) A regulatory agency may not approve the construction or use of a class I, II or III injection well. (2) Subject to the limitation contained in sub. (4) , the department may only approve the construction or use of a class IV injection well, if the well is to be used to reinject treated contaminated groundwater back into the formation from which the groundwater was withdrawn and is approved by the department as part of a remedial action necessary for the cleanup of soil or groundwater contamination. (3) Subject to the limitation contained in sub. (4) , a regulatory agency may approve a class V injection well as specified in subch. IV . (4) A regulatory agency may not approve the construction or use of any injection well that would violate the provisions of ch. 160 , Stats., result in the endangerment of an underground source of drinking water or otherwise fail to comply with the other applicable requirements of this chapter. (5) Failure to comply with any condition of an injection well approval voids the approval.