The San Diego County Water Authority Wednesday announced the filing of another lawsuit over rates charged by the Metropolitan Water District, a Los Angeles-based water wholesaler.

In its complaint filed in Superior Court in Los Angeles, the Water Authority contends that the rate structure approved Tuesday by the MWD board for 2017 and 2018 used the same methodology as costs from 2011-14 that were previously ruled illegal by a Superior Court judge.

MWD was ordered to pay $243 million in damages to the SDCWA, which takes in water from various local and imported sources, and distributes it to local water districts and cities.