[174C-51.5] Dual line water supply systems; installation in new industrial and commercial developments located in designated water management areas. (a) The commission, as a condition for issuing permits pursuant to this part, may require the use of dual line water supply systems in new industrial and commercial developments located in designated water management areas. The commission shall not require the use of dual line water supply systems if:

(1) There is a threat to existing water quality or to public health and safety, as determined by the department of health;

(2) A source of nonpotable water will not be reasonably available in the near future as determined by the commission; or

(3) There is a serious threat to permitted ground or surface water uses within a designated water management area as determined by the commission.

(b) The county boards of water supply, in consultation with the department of health, shall adopt standards for nonpotable water distributed through dual line water supply systems, and rules regarding the use of nonpotable water. The standards and rules shall be adopted in accordance with chapter 91 and shall protect existing water quality and the health and safety of the public.

(c) For the purposes of this section, the term:

"Developments" means one or more commercial or industrial subdivisions approved after May 30, 2000. It shall not apply to any modification, addition to, or replacement of, any commercial or industrial subdivision in existence prior to May 30, 2000.

"Dual line water supply system" means a supply system that distributes potable and nonpotable water through parallel but separate distribution lines. [L 2000, c 144, 2]

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