When Bow Mar initially contracted for wastewater treatment with Littleton, the City owned a wastewater treatment plant at the northwest corner of W. Belleview Ave. and S. Santa Fe Dr. When the plant reached capacity in 1979, the City decided to contract with the City of Englewood to build a joint plant rather than expand its existing facility. The new plant was constructed near the South Platte River and W. Dartmouth Ave. Bow Mar agreed to continue to contract for treatment services with Littleton and signed a new agreement on July 26, 1983 to help pay for the new treatment plant and a large 54-inch pipeline to transport wastewater from Littleton, Bow Mar, and surrounding areas to the new plant.
Bow Mar also entered into a separate wastewater treatment agreement with the City of Englewood in 1985 because a portion of the District connected to a sewer main that ultimately connected to the Englewood Wastewater Treatment Plant. That plant was abandoned when Englewood agreed to build a jointly owned and operated treatment plant with the City of Littleton in 1979.
Wastewater from another part of Bow Mar flows to the Metro Water Recovery District, the largest wastewater treatment agency in Colorado.
Each of the three treatment agencies bills Bow Mar for the customers they provide service to. Bow Mar then bills its customers in accordance with a uniform fixed rate schedule established by the Bow Mar Board of Directors.