Charlton Board of Health approves one accessory-dwelling plan, sets requirements for septic and water testing

The Charlton Board of Health on May 6 discussed new state accessory dwelling unit (ADU) rules, Title 5 implications for shared septic and well systems and approved an ADU plan for 7 Linen Hill Road with a deed restriction attached.

Board members said the board must address how ADUs will interact with local Title 5 (septic) rules, shared-well arrangements and long-term ownership or rental. The board approved a site plan for 7 Linen Hill Road (VC Engineering, plan dated 04/07/2025) "as drawn with the stipulation that a ADU restriction be put on the title," and voted later in the meeting to require a point-of-use water-quality test at the ADU kitchen sink before occupancy.

Why it matters: Massachusetts’ ADU changes (effective February 2 under the state law discussed at the meeting) make ADUs more common; local health officials said they need clear, enforceable steps so new ADUs do not create future public-health or property disputes. Board members repeatedly referenced Title 5 shared-system rules and deed restrictions as tools to protect both neighbors and future owners.

Key details from the meeting

- Approval: The board voted to accept the ADU plan for 7 Linen Hill Road (VC Engineering, 04/07/2025) with a deed restriction recorded before a final occupancy/certificate of compliance is issued. (Motion approved; recorded vote: "Aye. Aye.")

- Title 5 and shared systems: Inspectors and specialists told the board shared septic systems and shared…