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Filing UW - 260345

Company: Washington Water Service Company
DBA:
Filing Type: Petition
Case Status: Closed
Dates (Opened & Effective): 04/29/2026 & 07/11/2026
Summary: Petition for accounting deferral of costs associated with developing a comprehensive service line inventory required by 40 C.F.R. Parts 141 and 142. Under WAC 480-07-370(3)(b), Washington Water Service Company is requesting accounting deferral of all costs related to completing the service line inventory, including expense, capital, and carrying costs. The Company seeks to defer costs from October 1, 2025, through December 1, 2027, to track and preserve costs for separate ratemaking treatment.
Date File Link Document Type Description File Size
06/26/2026 260345-POS.pdf Order - Open Meeting Final Order 01, Complaint and Order Suspending Tariff Revisions 80,850 KB
06/26/2026 UW-260345 - Order 01 - Washington Water.pdf Order - Open Meeting Final Order 01, Complaint and Order Suspending Tariff Revisions 240,295 KB