Haw. Rev. Stat. § 342D-50.5: Wastewater or raw sewage; prohibition.

(a) Notwithstanding any other law to the contrary, no person or treatment plant shall discharge any wastewater or raw sewage into state waters after December 31, 2026; provided that this section shall not apply to a person or treatment plant that is in compliance with this chapter, rules adopted pursuant to this chapter, or a permit or variance issued by the director.

(b) Nothing in this section shall be construed to:

(1) Prohibit the use of reclaimed or recycled water for a beneficial purpose as provided by law; or

(2) Allow the discharge of wastewater or raw sewage into state waters in violation of any federal statute, rule, or regulation.