PERMITS AUTHORIZING REUSE WATER SYSTEM CONTRIBUTIONS AND DISCHARGES.

(a) This section applies only to wastewater treatment facilities operated by an agency of a home-rule municipality with a population of one million or more.

(b) In any permit or amendment to a permit issued under this chapter, at the request of the applicant the commission may authorize a wastewater treatment facility to contribute treated domestic wastewater produced by the facility as reclaimed water to a reuse water system if the commission has approved the use of reclaimed water from the wastewater treatment facility.

(c) In any permit or amendment to a permit issued under this chapter, at the request of the applicant the commission shall authorize, subject to any required approval by the United States Environmental Protection Agency, a wastewater treatment facility to:

(1) contribute reclaimed water into a reuse water system operated by the agency; and

(2) discharge reclaimed water contributed to a reuse water system at any outfall for which a discharge from the reuse water system is authorized in any permit issued for any wastewater treatment facility operated by the agency.

(d) For an effluent limitation violation occurring at an outfall permitted for reuse water system discharges by more than one wastewater treatment facility, the commission shall attribute the violation to the wastewater treatment facility contributing the reclaimed water causing the violation. For a violation that is not directly attributable to a specific wastewater treatment facility, the commission shall attribute the violation to the wastewater treatment facility contributing the greatest volume of reclaimed water to the reuse water system on the date of the violation.