Ooo that sounds fantastic, Jooles. It'd be great to get systems like that up and running. It'd be handy if the cost was reduced somehow.

I forgot to add.... we have a lot of garden! LOL We're on half an acre. The previous owner was right into her gardening and planted a lot of things that need water to stay pretty. We're concentrating just on the immediate back yard and out the front of house (the rest will just have to survive on what little rain we are getting) but we figure if we're using recycled water to keep it green, it's worth it. Our back lawn died off a little until we got the grey water out there so the green is coming back. It makes for a nice area for Gab to play. It's just a small area we're concentrating on.
Also, Neil started a vege patch but we just water that with a watering can.

We never watered our previous garden but we planted natives so they all seemed to cope with the dry weather.