It really should be outlawed almost everywhere. It's the biggest crop in America and iirc the largest consumer of water and insecticides and other chemicals. Natural lawns can be beautiful and more positive for the local environment.

Grass grows naturally with little to no maintenance in lots of areas. It doesn't have to be a manicured lawn.

There is plenty of areas where there is enough natural rainfall. No point of banning it there. Just have to accept that sometimes if there is drought it will go brown, but it will survive and regrow eventually in such areas.

Now if it needs regular watering yeah, that is waste unless there is plentiful surface water...

because Las Vegas is in the desert and lawns are a waste of precious water.