(a) Potable water provided in accordance with the provisions of §75.1718 shall meet the applicable minimum health requirements for drinking water established by the State or community in which the mine is located.

(b) Where no state or local health requirements apply to drinking water or where no state or local minimum health requirements exist, drinking water provided in accordance with the provisions of §75.1718 shall contain a minimum of 0.2 milligrams of free chlorine per liter of water.