ARM 38.5.2530. PURCHASED WATER COST PASS-THROUGH OPTION

(1) A small water or sewer utility may file an application for authorization to pass through price changes (increases and decreases) relating to the cost of purchased water obtained from a local municipality or from other entities which are not affiliated interests. (2) Following commission approval of the establishment of a purchased water cost pass-through mechanism, the utility shall timely revise and refile its pass-through rate tariff as its costs of purchased water change. (3) A purchased water cost pass-through tariff shall be revised and refiled within 60 days of a decrease in purchased water costs, and shall be designed to pass through to customers the entire reduction in purchased water costs from the date the reduction becomes effective. A purchased water cost pass-through tariff may be revised and refiled at any time after an increase in purchased water costs, and shall be designed to recover cost increases prospectively from the date of filing only.