If the superintendent or principal of a school or the designee of the superintendent or the principal determines that a substantial health or safety hazard exists at the school, the superintendent, the principal or the designee of the superintendent or the principal shall notify the health authority of: (a) The hazard; and (b) Any remedial action that has been taken to correct the hazard, --> within 24 hours after the determination is made.

As used in this section: (a) "Public water system" has the meaning ascribed to it in NRS 445A.235. (b) "Substantial health or safety hazard" means any violation of the provisions of NAC 444.568 to 444.56862, inclusive, that may endanger the health or safety of the general public. The term includes, without limitation: (1) A loss of electrical power or any other utility in the school that causes the failure of a system which is required for the operation of the school, including, without limitation, a system for lighting, heating or cooling; (2) A supply of potable water for the school that has not been approved by the health authority or does not comply with the provisions relating to sampling and notification of the general public set forth in chapter 445A of NRS and the regulations adopted pursuant thereto; (3) The existence of a defect or condition in the public water system that supplies potable water to the school which may result in the contamination of the water; (4) Sewage or liquid waste in the school that: (I) Is disposed of in a manner which has not been approved by the health authority; or (II) Has contaminated any part of the school to which the general public has access; (5) The presence of insects, rodents or other vermin in the school that constitutes a significant threat to the health or safety of the general public, as determined by the health authority; (6) The presence of any toxic material in the school that is labeled, stored or used improperly; (7) Toxic or noxious gases, vapors, fumes, mist or particulates that are present in the school in concentrations which are immediately dangerous to the life or health of a person present in the school or in concentrations which are sufficient to cause a public nuisance; (8) Any condition or equipment used in the school that constitutes an unreasonable risk of crushing a person, puncturing or pinching the skin of a person or otherwise injuring a person by causing the person to fall, trip or sustain any physical injury; (9) A classroom or any other room in the school that is occupied by pupils or members of the staff of the school and has ambient temperatures which constitute a significant threat to the health or safety of the pupils or members of the staff, as determined by the health authority; or (10) A school in which toilets and facilities for washing hands are not provided or are not accessible.

Potable water of a sufficient amount to meet the requirements of a school must be provided to the school from a supplier that is approved by the health authority and licensed by the Division.

Water that is under pressure and maintained at the required temperature must be provided to all fixtures and equipment of the school which uses water. The system that provides hot water to the school must provide a sufficient amount of hot water to meet the requirements of the school during its hours of operation.

There must not be a cross connection between:

• (a) The supply of potable water and any water that is nonpotable or may be nonpotable; or
• (b) The supply of potable water and any source of pollution by which the potable water may become contaminated.

A system for supplying nonpotable water may be used only for air conditioning, cleaning, flushing toilets and fire protection, if the system is approved by the health authority and does not come into direct or indirect contact with the supply of potable water. The piping of a system for nonpotable water must be clearly and permanently identified so that it is readily distinguishable from piping which carries potable water.

The system for potable water must be installed to prevent backflow. Devices to prevent backflow and back siphonage must be installed on a fixture or equipment that does not have an air gap which is at least twice the diameter of the inlet for the water between the inlet and the flood level rim of the fixture. A hose may not be attached to a faucet unless a device to prevent backflow is installed.

A device to prevent backflow or back siphonage that is installed on a system for potable water must comply with the Standard for the construction, installation, maintenance, inspection and testing for that specific application and type of device set forth in the Uniform Plumbing Code, as adopted by reference in NAC 444.56816.

The use of lead solder on piping carrying potable water is prohibited.

The health authority shall have supervision over the sanitation, healthfulness, cleanliness and safety, as it pertains to the foregoing matters, of the following city, county and private institutions:

• (a) Jails, correctional institutions and other institutions performing similar functions, including, without limitation, any facility for the detention of children;
• (b) Schools; and
• (c) School gymnasiums.

The State Board of Health shall, with respect to jails, correctional institutions and other institutions performing similar functions, including, without limitation, any facility for the detention of children, and may, with respect to the other institutions named in subsection 1, adopt and enforce such regulations as are necessary to promote properly the sanitation, healthfulness, cleanliness and safety, as it pertains to the foregoing matters, of those institutions.

The health authority shall inspect those institutions at least once each calendar year and at such other times as, in its discretion, it deems an inspection necessary to carry out the provisions of this section, except that inspections of schools and gymnasiums shall be made at least twice each year, once during each semester. The inspection of any institution which has physical custody of children pursuant to the order of a court must include, without limitation, an inspection of all areas where food is prepared and served, bathrooms, areas used for sleeping, common areas and areas located outdoors that are used by children at the facility.

A report of the findings of an inspection must be made to the Chief Medical Officer within 20 days following the inspection. The Chief Medical Officer shall publish the report of the inspection of any facility which has physical custody of children pursuant to the order of a court and may from time to time, in his or her discretion, publish the reports of the inspections of other institutions.

All persons charged with the duty of maintenance and operation of the institutions named in this section shall operate those institutions in conformity with regulations relating to sanitation, healthfulness, cleanliness and safety, as it pertains to the foregoing matters, adopted by the State Board of Health.

The health authority may, in carrying out the provisions of this section, enter upon any part of the premises of any of the institutions named in this section over which it has jurisdiction, to determine the sanitary conditions of those places and to determine whether the provisions of this section and the regulations of the State Board of Health pertaining thereto are being violated.