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Capacity

CapacityFairfax County owns one treatment plant in the sewer system. Through inter-jurisdictional agreements, a portion of the wastewater flow collected in the system is conveyed to five regional treatment facilities operated by Arlington County, the District of Columbia (Blue Plains), the Alexandria Sanitation Authority, the Upper Occoquan Sewage Authority, and the Prince William County Service Authority. The capacities of the various treatment plants are provided in the table below.

Wastewater Treatment Plant Distribution (In Millions of Gallons per Day)

Wastewater Treatment Plant (WWTP)
County Capacity
County-Owned WWTP, Noman Cole 67.00
Colchester (Private) 0.08
Prince William County Service Authority 0.10
Blue Plains (D.C.) 31.00
Alexandria Sanitation Authority 32.40
Arlington County 3.00
Upper Occoquan Sewage Authority 27.60
Total System Capacity 161.18