CFR > Title 30 - Mineral Resources > CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR > SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH (parts 56 to 58) > PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES > SUBPART S—Miscellaneous (§57.20001 to §57.20032) > 57.20002—Potable water.

57.20002—Potable water.

(a) An adequate supply of potable drinking water shall be provided at all active working areas.
(b) The common drinking cup and containers from which drinking water must be dipped or poured are prohibited.
(c) Where single service cups are supplied, a sanitary container for unused cups and a receptacle for used cups shall be provided.
(d) When water is cooled by ice, the ice shall either be of potable water or shall not come in contact with the water.
(e) Potable water outlets shall be posted.
(f) Potable water systems shall be constructed to prevent backflow or backsiphonage of non-potable water.
Access to unattended mine openings shall be restricted by gates or doors, or the openings shall be fenced and posted.
Upon abandonment of a mine, the owner or operator shall effectively close or fence off all surface openings down which persons could fall or through which persons could enter. Upon or near all such safeguards, trespass warnings and appropriate danger notices shall be posted.