Typically, water samples of influent (raw sewage), primary-treated effluent, and ozone treated effluent were collected between 10 00 and 14 00 in polyethylene containers and stored on ice.
Currently, the Peekskill plant discharges 6.3 million gallons of treated effluent per day into the Hudson.
Officials say about 15 percent of its water originates from treated effluent, marketed as "NEWater".
It also persuaded 95 parks and golf courses to irrigate with treated effluent rather than potable water, saving millions of gallons a year.
One pioneer was Windhoek, Namibia, which began sending treated effluent into the potable water system in 1968.
The diversion proposed for New Castle's waste would be smaller, adding under a half-million gallons of treated effluent to the Yonkers plant's current outflow of approximately 83 million gallons per day.
Mr. McAllister said the state began an enforcement action only after a December 1999 spill of some 250,000 gallons of partly treated effluent, and because of his prodding.
Alpha Reclaim Technology, a year-old company based in Bryan, is buying treated effluent from Karnes City and other municipalities in the Eagle Ford Shale.
Even municipalities that do not pump waste-water back into aquifers or reservoirs, often draw their drinking supply from rivers that contain the treated effluent from communities upstream.
AD + MF signifies treated effluent.
The treated effluent quality was shown in Table 2.
