(1) Every wastewater company subject to regulation by the commission must, on or before the date specified by the commission for filing annual reports under RCW
80.04.080, pay to the commission a regulatory fee.
(2) The commission must assess such regulatory fees in amounts sufficient for the commission to recover the commission's actual and reasonable costs of supervising and regulating wastewater companies.
(3) Any payment of a fee assessed under this section made after the due date must include a late fee of two percent of the amount due.
(4) Delinquent fees accrue interest at the rate of one percent per month.
(6) The commission is authorized and empowered to adopt and issue rules and regulations to implement this section, including establishing the methodologies and procedures for developing, assessing, and collecting fees under this section.