This already happens. Las Vegas has restrictions on this. LA does too. Additionally, just looking at the LA water rates [1] you see that depending on the size o

This already happens. Las Vegas has restrictions on this. LA does too. Additionally, just looking at the LA water rates [1] you see that depending on the size of the lot, you get a tiered water pricing depending on your usage. Put another way: the more water you use the more each unit of water costs you. So you can have a big non-native lawn but it's going to cost you. Personally, I'm completely fine with that. Outright prohibition seems unnecessary. [1]: https://www.ladwp.com/ladwp/faces/ladwp/residential/r-customerservices/r-cs-understandingyourrates/r-cs-ur-waterrates https://www.ladwp.com/ladwp/faces/ladwp/residential/r-custom...