From the Wall Street Journal:

"In May, the DOE stunned the plumbing-products industry when it said it
would adopt a strict definition of the term 'showerhead' in enforcing
standards that have been on the books—but largely unenforced—for nearly 20
years."

http://online.wsj.com/article/SB1000...611463490.html

So much for the dude selling shower heads at up to $5,500 (24" in diameter,
365 nozzles).