No gas company, electrical company, wastewater company, or water company may make or grant any undue or unreasonable preference or advantage to any person, corporation, or locality, or to any particular description of service in any respect whatsoever, or subject any particular person, corporation or locality or any particular description of service to any undue or unreasonable prejudice or disadvantage in any respect whatsoever.

Findings—Purpose—Limitation of chapter—Effective date—2011 c 214: See notes following RCW 80.04.010.