The Corvallis water supply has been treated with Synthetic Fluoride and Chlorine since 1952. Even though the amount added is only 0.7 parts per million, far below the level that is considered a health hazard, no amount of these chemicals are actually necessary for the water treatment process. It has been stated time and time again by so-called conspiracy nut jobs, that Fluoride is an industrial strength neurotoxin that has detrimental effects on human health. This is not just conspiracy theory, this is a fact.
Numerous studies have shown that synthetic fluoride, not to be confused with natural fluoride, has an ability to pass through the blood-brain barrier and is responsible for the lowering of IQ levels in children across all fluoridated cities, as well as various other mental afflictions like depression, anxiety, addictions, impulsivity and aggression. One person who had attempted to conduct these studies on rats as proof has had all of his workbooks mysteriously destroyed and confiscated by the government. He had come back to his laboratory one day, just before he was about to post his article to the newspaper, to find that it was completely flooded. 
America is one of the only countries that hasn't illegalized the usage of fluoride. It also has an ability to absorb through your skin during showers. Many lead toothpaste brands that put fluoride in their toothpaste warn you that swallowing fluoride can be dangerous. In fact, Fluoride actually has a negative effect on dental health as well and decalcifies teeth. The effects that fluoride has on your brain is similar to that of Prozac or other psych medications, and was first used in Nazi Germany as an experimental chemical to make the Jews more docile and compliant.

It is responsible for the crystallization of calcium on your Pineal Gland, a small, pinecone shaped gland in the exact center of your brain that is one of the most essential organs of your body. It deals with hormonal responses during puberty, regulating your circadian rhythm, and helping to expand your range of conscious awareness. It produces serotonin and melatonin, as well as Dimethyltriptamine (DMT), a neurotransmitter that is created naturally by your brain during the dreaming state and during death. Regular exposure to sunlight and meditation during the early morning hours helps to stimulate your Pineal Gland. It should come quite obvious to us that the Pineal Gland plays a crucial role in the regulation of your mood, your developement and overall well-being.