I lived in the western US for a number of years. During this time, I became quite familiar with water shortages and local efforts to address these problems. Living in San Francisco (late 1980’s/early 1990’s), I remember many restaurants stopped serving water with meals (unless one asked – 5+ times). I also recall the mandate that residents restrict their bathing frequency to 3X/week. Fast forward to 2005 and I find that Waukesha, just 55 miles east of Madison, faces significant water problems. Felicity Barringer digs in:

The draw-down of water from the deep aquifer was gradual at first, accelerating in the late 1980’s and throughout the next 15 years. In recent measurements, the water level had dropped about 600 feet. And the deeper the water source, the more likely that it would be contaminated with too much radium, a naturally occurring radioactive element.

A must read, for all water consumers: Cadillac Desert.