As you may know, federal law prohibits selling, repairing, modifying,
trafficking in, speaking of, or using a new shower head that actually
delivers water in a form other than a light mist.

A company in Arizona has circumvented the federal regulations by concocting
a replacement shower-head assembly containing THREE heads, each delivering
the federal maximum. This results in a mostly acceptable shower.

Here's a story about this breakthrough invention:
http://www.mises.org/story/2007

According to the article, the ecofacists are in a dither over this flagrant
affront to law, decency, and the will of those-who-know-best.

The story goes on to inform you how these 'water saving' shower heads work
and how you can gain access to the actual part restricting the flow so that
it can be removed and, of course, replaced should the part ever wear out or
not adequately restrict water flow (nudge-nudge, wink-wink).

P.S.
The best way to conserve a scarce resource is to let the marketplace price
the product according to the laws of supply and demand. Inasmuch as most
water systems are run by agencies of government, this concept is completely
impossible to understand.