Treating water is more than a profession for Nate Tillis. You could easily say it's a calling. His deep appreciation for water comes from his studies of kung fu and Eastern religions, and from teachers who include actor and martial arts expert Bruce Lee and Taoism founder Lao Tzu.
"What really got me interested were the philosophical properties of water and the way people relate water to life," says Tillis, at age 32 the supervisor of operations and maintenance at the Beloit (Wis.) Water Pollution Control Treatment Facility. "It's said about water that
