Sonoma County Gazette, July 2012

Recycled wastewater runoff: why you should care….
About 80 million pounds of the herbicide Atrazine are applied to the land each year nationwide, second only to glyphosate, prime ingredient of Round Up. Endocrinologist Dr. Tyrone Hayes discovered that exposing frogs to as little as 2.5 parts per billion of atrazine in water, less than the drinking water standard for humans, caused male frogs to develop female bodies, both internally and externally.