 Prior to this installation, whenever DC Water employees went underground, radio communications no longer functioned.The DAS installation has been called modular, scalable, and integrates with the district system used by other DC Metro government agencies and first responders.The Blue Plains Advanced Waste Water Treatment Plant is the largest advanced waste-water treatment plant in the world, serving over 2 million customers in the Washington DC metro area, covering 150 acres and maintaining a capacity of 370 million gallons per day (MGD), with a peak capacity of 1.07 billion gallons per day (BGD).