In Orange County, California, more and more emphasis is put on new technologies for recycling industrial water. The Siemens waste water treatment plant uses filters to remove suspended particles from the water. After that, bacteria are filtered out. Last step in the conversion of waste water into drinking water is known as reverse osmosis. More: http://www.water.siemens.com/en/Pages/default.aspx
How does the dirty water you flush down a toilet get cleaned safely before it's released to the environment? That's the work of a wastewater treatment plant. The Northeast Ohio Regional Sewer District, headquartered in Cleveland, operates three such plants, including the largest in Ohio. Let Wally Waterdrop take you on an up-close-and-personal tour of the treatment process. You can also find more information at neorsd.org and wheredoesitgo.org.