If a school building of a school administrative unit is supplied by a water supply operated by the school administrative unit and which serves only the school buildings under the control of the school board, the water supply is not considered a public water supply under Title 22, sections 2651‑B and 2653. The school board shall ensure that this water supply meets standards set by the Department of Health and Human Services for private water supplies of schools.   [RR 2021, c. 2, Pt. A, §41 (COR).]