31.   In some cases, like waste water treatment, they note, he decided not to allow city workers to bid on jobs.

32.   In the fuel cell the hydrogen reacts with oxygen to produce electricity and harmless waste water.

33.   In Western Europe, waste water treatment is mandated by governments.

34.   It includes elevators, streetlights, alarm systems, sprinklers, libraries, motion sensors, waste water plants and golf caddie shacks.

35.   Most of the office floor is covered with a nylon-based carpet manufactured in a process that produces no waste water.

36.   Of particular concern are intestinal parasites like cryptosporidium, which are difficult to kill with chlorination alone and which can travel in poorly treated waste water.

37.   On completely submerged farms, the waste water is completely mixed and indistinguishable from the surrounding floodwaters, she said.

38.   One target of the group is pulp and paper mills, which produce dioxin in waste water as an unwanted byproduct of chlorine bleaching.

39.   Overhead sprinklers and irrigation systems are effective for large lawns but waste water when it comes to trees, shrubs and small plants.

40.   Other improvements include new fuel storage facilities, and a system for treating sewage and recycling waste water.