Utah Code Title 19. Environmental Quality Code § 19-4-112. Limit on authority of department and board to control irrigation facilities--Precautions relating to nonpotable water systems

(a) exercise administrative control over water used solely for irrigation purposes, whether conveyed in pipes, ditches, canals, or by other facilities;  or

(b) adopt rules relating to the construction, operation, and maintenance of facilities for conveying irrigation water to the place of use.

(a) a distinctive coloring or other marking on all exposed portions of the nonpotable system shall be used;

(b) potable and nonpotable water system service lines and extensions shall be completely separated and shall be installed in separate trenches;

(c) all hydrants and sprinkling system control valves shall be operated by a removable key so that it is not possible to turn on the hydrant or valve without a key;

(d) there shall be no cross connection between the potable and nonpotable water systems;

(e) the nonpotable system may not be extended into any building except greenhouses or other buildings for plant and animal production;  and

(f) no connection in the nonpotable water system shall be made except by the persons responsible for its management.