Using recycled sewage for non-potable use ...

... like making snow:

Excerpt from News.com.au

Resort turns sewage to snow

From AAP

By Catherine Best and Jane Williams

10 June 2006

...

Victoria's Mount Hotham will become the first ski resort in the world to recycle its own sewage as artificial snow, using technology which could save 110 million litres of water a year.

The first stage of the $8.4 million sewage and waste water project – a 27 million litre reservoir – was opened today.

Water from Swindler's Creek has been pumped into the reservoir and will be pumped on to the resort's snow-making facilities to replace the 110 megalitres of potable water used to make up 275,000 cubic metres of snow each season.

...

Victoria's Deputy Premier and Environment Minister John Thwaites, who was at Mr Hotham to launch of stage one of the recycling program, said the system would increase water flow through the creek and promote healthy waterways throughout the Upper Murray Catchment.

"Using recycled water as a substitute for potable water is an effective way to protect Victoria's water supplies against the projected shortfall caused by climate change and population growth," Mr Thwaites said.

Source - News.com.au - Resort turns sewage to snow.