Wednesday, Jan. 7, 2009 | Centreville, Va. — Tucked behind evergreens, down a long lane in an otherwise anonymous stretch of this Washington, D.C. suburb south of Dulles International Airport, sits a facility that provides San Diego with the best evidence that it’s safe to fill drinking water reservoirs with purified sewage.
Here, a treatment plant has been purifying sewage and dumping the clean water into the Occoquan Reservoir, a source of drinking water for 1 million residents of Northern Virginia’s densely populated suburbs in Fairfax and Prince William counties.
And they’ve been doing it 30 years.
The sewage arrives here at the Millard H. Robbins Jr. Water Reclamation Plant from the toilets of 275,000 nearby residents. A day-and-a-half later, after being disinfected and stripped of its contaminants, it washes down a wide concrete spillway into Bull Run, the Occoquan Reservoir tributary made famous by its Civil War battles.