That's water efficiency.Most people in the western world recycle some of their household goods.Book now before the prices go up!When this is full, a float switch detects it and the water is automatically pumped to a 1000 litre (200 gallon) tank above ground.Wind is responsible for major evaporation of water from pools.Recycled water enables a garden to flourish where water may not otherwise be available - water efficiency.Water is tipped down the drain, people don't think of how to be truly water efficient.