11.  As an example, the environmental group cited an installation in Waco, Texas, that uses a bed of reeds to clean industrial waste water.

12.  At first, they talked of putting in a holding tank at the racetrack to even out the flow of waste water.

13.  Beaver Stadium turf has stayed green during the drought with waste water from a nearby treatment plant.

14.  A certain amount has to be released from Lanier to dilute waste water from sewage treatment plants downstream.

15.  A girl from Port Washington, N.Y., researched a less expensive way to treat municipal waste water.

16.  A spokesman said the provision was not meant to let ships put chemicals like cleaning fluids into their waste water.

17.  But Sunday, Ms. DelliCarpini said the extremely low levels of bacteria found in the water suggested that much less waste water had escaped than had been feared.

18.  But the ongoing battle continues to contaminate waste water that ultimately flows into the Trinity River.

19.  But two years ago, water district officials learned that their facility might be the final destination for the waste water from the speedway.

20.  Converting vegetable oil into diesel fuel takes time, can be done only in batches and creates a waste water problem.