The California Courts of Appeal has 90 days to decide the fate of a water rate dispute between a Los Angeles-based water wholesaler and San Diego County water managers. At issue is the cost of moving water through the Metropolitan Water District’s delivery system. San Diego water managers accused Metropolitan of charging too much to move water San Diego bought in Imperial Valley through MWD’s delivery system. A Superior Court judge agreed and awarded the San Diego County Water Authority $243 million. Metropolitan officials say the lower court got it wrong.