Nevada Revised Statutes 445A.925 – Duties of Division and district boards of health
1. The Division and the district boards of health shall:
(a) Enforce the provisions of NRS 445A.800 to 445A.955, inclusive, and regulations adopted pursuant thereto; and
(b) Make such investigations and inspections as are necessary to ensure compliance with those sections and regulations.
2. Any representative of the Division or the appropriate district board of health may enter the property of any public water system at any reasonable time for the purpose of inspecting and investigating the adequacy and sanitary condition of the system and the quality of its water.
3. Except in an emergency, the Division or the appropriate district board of health shall notify and permit the supplier of water to be present when an inspection or investigation is being conducted.