contamination problems. The new treatment facility was not conceived as a reuse
facility, but rather as an effort to simply
improve water quality in the reservoir.
This simplified the permitting and public
perception issues. After discharging highly
treated wastewater into the Occoquan
Reservoir, Fairfax County Water uses that
reservoir as part of their water supply (NRC
2012, Rice 2013, UOSA 2014).
Another example of potable reuse in the
eastern part of the United States occurs in
Gwinnett County, Georgia. This is another
surface water augmentation project.
Gwinnett County returns highly treated
wastewater back into Lake Lanier, which
is also their water supply source. The challenge they face is how to account for this
water that goes back into the lake in order
to factor that into their net withdrawal.
The use of Lake Lanier water for water
supply is currently undergoing evaluation
by the U.S. Army Corps of Engineers, and
its allocation may be impacted (Gwinnett
County 2012, NRC 2012).
Growing populations and limited water
resources in the eastern half of Colorado
have led to a large potable reuse project
in Aurora, Colorado called the Prairie
Waters Project. Installed just a few years
Data from: NRC 2012