must have a person in responsible charge at the facility or on call at all times. Except as otherwise provided in NAC 445A.6285, the person in responsible charge of the public water system must hold a full certificate in the same classification as, or a higher classification than, the classification of the public water system pursuant to NAC 445A.629.
Nev. Admin. Code § 445A.6275
NRS 445A.860, 445A.880