Sioux Valley Dakota Nation Public works department, in cooperation with our water treatment staff have begun the early stages of flushing the waterline throughout Sioux Valley. The process began in the south end and will continue to move toward the north end of the waterline. How long this process will take is dependent on the time it takes to replenish the reservoir. We estimate that it will take another couple of days to complete the full waterline flush. If you are experiencing discolored water, this is normal, and we recommend you run your tap until the water clears. We apologize for any inconvenience, but this process is necessary for regular maintenance.