Potable; jurisdiction over water facilities and source.

A. For the purpose of acquiring, maintaining, contracting for, condemning or protecting its water facilities and water from pollution, the jurisdiction of the municipality extends within and without its boundary to: (1) all territory occupied by the water facilities; (2) all reservoirs, streams and other sources supplying the reservoirs and streams; and (3) five miles above the point from which the water is taken. B. In exercising its jurisdiction to acquire, maintain, contract for or condemn and protect the water facilities, the municipality shall not act so as to physically isolate and make nonviable any portion of the water facilities, within or without the municipality. The municipality may adopt any ordinance and regulation necessary to carry out the power conferred by this section.