Even if residential landscaping or non-landscaping water usage dropped by a quarter immediately, which seems rather unlikely, that's close to a rounding error compared to the amount of water to turn our near-desert into an agricultural breadbasket. Put another way, more water is used for almond farming alone in California than all residential landscaping or residential non-landscaping: http://www.slate.com/articles/technology/future_tense/2014/0...
The drought is real, but I would take op-eds like these more seriously if they acknowledged the above figures. And the fact that some cities like Sacramento still don't have everyone on metered water -- flat rate! -- and meters won't be fully installed until after 2025. Source: http://portal.cityofsacramento.org/%20Utilities/Conservation...