(1) Each Class A water company must file an annual report summarizing all transactions, except for transactions provided at tariff rates, that occurred between the company and its affiliated interests, and the company and its subsidiaries. The report is due one hundred twenty days from the end of the company's reporting period, whether a fiscal or calendar year. The report must include a corporate organization chart of the company and its affiliated interests and subsidiaries.

(2) When total transactions with an affiliated interest or a subsidiary are less than twenty-five thousand dollars for the reporting period, the company must provide the name of the affiliated interest or subsidiary participating in the transactions and the total dollar amounts of the transactions. When total transactions with an affiliated interest or subsidiary equal or exceed twenty-five thousand dollars for the reporting period, the company must provide:

(a) A balance sheet and income statement for such affiliated interest;

(b) A description of the products or services provided to or from the company and each such affiliated interest or subsidiary;

(c) A description of the pricing basis or costing method, and procedures for allocating costs for such products or services, and the amount and accounts charged during the year;

(d) A description of the terms of any loans between the company and each such affiliated interest or subsidiary and a listing of the year-end loan amounts and maximum loan amounts outstanding during the year;

(e) A description of the terms and total amount of any obligation or liability assumed by the company for each such affiliated interest or subsidiary;

(f) A description of the activities of each such affiliated interest or subsidiary with which the company has transactions; and

(g) A list of all common officers and directors between the water company and each such affiliated interest or subsidiary, along with their titles in each organization.

(3) The report required in this section supersedes the reporting requirements contained in previous commission orders authorizing affiliated interest transactions pursuant to chapter 80.16 RCW.

(4) The company is obligated to file verified copies of affiliated interest contracts and arrangements as stated in WAC 480-110-545 (Affiliated interests—Contracts and arrangements).