Me. Rev. Stat. tit. 38, § 480-E-2

The commissioner may delegate review authority to determine whether an activity that requires a permit because it is located within a community public water system primary protection area meets the standards in section 480‑D, subsections 2 and 5 if the activity does not in whole or in part otherwise require a permit pursuant to section 480‑C. The commissioner may delegate this review authority to the drinking water program of the Department of Health and Human Services or to a community public water system that demonstrates adequate technical capacity to perform the review. If review authority is delegated, the department shall issue or deny the permit and retains enforcement authority.