Californian water agencies have offered money to convert lawns to rock or low-water gardens for a while now.

The lawns get wrapped up in that residential water usage figure mentioned further up the chain, so it isn't a whole lot compared to Big Ag.

Yeah, xeriscaping helps. In terms of municipal uses though, watering is a significant chunk in the city I live in. Not much compared to ag or actual waste, but it's a number the city is happy to push down - and has been.