The Baker City Waste Water Treatment Facility is located at 42661 Imnaha Road, Baker City. The facility's primary 36" collection line for sanitary wastewater is located under Imnaha Road. In November of 2010, approximately 1.1 million gallons of raw waste water was received each day at the treatment facility. Average daily inflow at the treatment facility in August of 2010 was approximately 2,049,000 gallons of raw waste per day.
The treatment facility is comprised of four storage ponds. Pond A, which is approximately 68 acres in size, is where reclaimed water is initially stored at the facility. Once the reclaimed water in Pond A has gone through the necessary biological treatment process, it is released into Pond B, then Pond C and finally into Pond D. In each pond the reclaimed water continues to go through a biological treatment process. Ponds B, C and D are each approximately 10 acres in size. Once the reclaimed water has gone through the required treatment process, it is released into the Powder River which is adjacent to the facility.