That's interesting, Kenny. Is that because nearby WWTPs don't have the capacity to produce enough recycled water of sufficient quality (and so need upgrading), or that the courses don't have enough WWTPs near enough to make supply viable?

It seems to me that we all really need to be concentrating on enhancing the integrated water cycle to generate as much recycled water as possible (using on-site PV power), to be supplied specifically to major users for which that quality of water is more than acceptable (firefighting systems, parks and gardens, street cleaning, bloody golf courses).

I was astonished to read some years ago that in Ancient Rome they piped different qualities of water from the different aqueducts supplying the city to cover different uses. And yet we pump millions of hectolitres of drinking water to be used to clean the streets or water public lawns.