On Fri, 03 Aug 2018 12:42:09 +0100, Chris Hogg wrote:

snip

What you need is a septic tank. You pay for the water you use, in the
usual way, but not for its disposal, so total payments are roughly
halved compared to normal. And in the extreme, you have a source of
nutritious but smelly water for the garden if things get really
desperate. Not that I ever needed to use mine for that, and I wouldn't
recommend it for the veg garden!

And even if it was higher than your vegetable patch, how you would
start the siphon ... gag ;-(

Cheers, T i m