Cases with Industry Code "WS" WATER & SEWER, Purpose Code "TRF" Commission approved final tariffs, and Status "OPEN" OPEN (3%20cases) Case NumberCase TitleOpen DateClosed Date 89-7049-WS-TRFCOLUMBIA MHC EAST LLC DBA COLUMBIA PARK WATER AND SEWER SYSTEM10/04/2001 89-7053-WS-TRFISLAND WATERWORKS LLC01/20/2017