The Living Machine is a trademark and brand name of wastewater treatment. A Living Machine is made up by a series of tanks teeming with live plants, trees, grasses and algae, koi and goldfish, tiny freshwater shrimp, snails, and a diversity of microorganisms and bacteria. Each tank is a different mini-ecosystem designed to eat or break down waste. The Living Machine is usually designed with landscape to create green spaces. In the sewage treatment system designed with the building, the brown water is cycled and reused as flush. In most office buildings, water goes like flush-living machine-flush. It is an importance system for water-crisis.