two types of groundwater recharge are addressed: surface
spreading and direct injection (CDPH 2016).
Direct injection applications require the implementation of
reverse osmosis (RO)-based full advanced treatment systems—a
In the State of California, several projects are already in opera-
tion and many more are in planning stages, buoyed by California’s
2014 promulgation of regulations providing a direct framework
for groundwater recharge with recycled water. In this regulation,
Bryan Trussell, Yan Qu, Rhodes Trussell, Trussell Technologies; and
Yoshiko Tsunehara, Los Angeles Department of Water & Power
As populations increase and access to natural water supplies dwindles, the use of recycled water for drinking water purposes is fast becoming one of the most economical and sustainable means of developing new water supplies.
in the San Fernando
Valley Using Soil Columns