LyrArc Article Gist
The Southern Nevada Water Authority has cut water consumption coming from the Colorado River by 25% over 2 decades even as population has grown by 50%. It has done this by fining people for excessive use and paying landowners to remove turf grass. One television ad shows a person being scolded for excessive water use and the line "Vegas is enforcing water waste big time." 

As a result of water conservation, water pricing, and replacing turf grass, the seven states fed by the Colorado River and the reservoir Lake Mead have seen much improvement in water usage. Lake Mead hit by a drought in the years 2000-2015 is now risen by 25 feet to 1096 feet in 2020 making it 44% full, the highest level in 6 years.

The water conservation efforts in Southern California have yielded results. Metropolitan Water District of Southern California gave out $350 million in rebates for replacing turf grass. Irvine Ranch Water District cut drinking water use by 20% with higher pricing for inefficient use beyond a set limit.

Building codes are amended preventing turf grass in front of homes. Lawns and golf courses replaced turf grass, with some golf courses using desert landscapes. In this area of 10 million people 200 million square feet of turf grass was taken out.