California will soon have toughest shower head requirements in nation

Current rules, established in 1994 at the federal level, allow a maximum flow of 2.5 gallons per minute from a shower head.
Effective next July, the limit will fall to 2.0 gallons per minute and will be reduced again in July 2018, to 1.8 gallons, giving California the toughest standard of any U.S. state http://www.latimes.com/local/lanow/la-me-ln-shower-heads-20150812-story.html
Article courtesy of The Los Angeles Times by Kurt Chirbas and Taylor Goldenstein