Maine Subsurface Wastewater Rules


Current Rules

IMPORTANT:  The Maine CDC Subsurface Wastewater Unit’s amendments to the Subsurface Wastewater Disposal Rules (10-144 CMR Chapter 241) have been adopted and are effective as of September 23, 2023.  Click here to review details of the rule amendments.

Training on the amended rules will be provided in the spring of 2024. To receive updates about the rules and notices of the trainings, we recommend subscribing to the weekly “Septic Snippets” newsletter. To subscribe, please reach out to State Site Evaluator Brent Lawson: email or phone 592-7376.


Prior Rules

The following links are for superseded versions of the Maine State Plumbing Code and the Subsurface Wastewater Disposal Rules in which significant revisions were incorporated. These are offered for reference only.


Updated 6/25/2024