General Discussion
In reply to the discussion: Paranoid Township Board ends fluoridation of water. [View all]Yo_Mama
(8,303 posts)Some places have naturally high levels of fluoride. So adding more fluoride into the water there is a health hazard. The federal government is lowering standards for fluoride water levels because of its findings:
http://www.usatoday.com/yourlife/health/medical/2011-01-07-too-much-fluoride_N.htm
http://www.hhs.gov/news/press/2011pres/01/20110107a.html
Among the side effects of overexposure to fluoride are lower bone densities and higher fracture rates. This is the EPA page on the latest studies and risk assessments. It is likely that they will lower maximum levels at some point from the current level.
http://water.epa.gov/action/advisories/drinking/fluoride_index.cfm
Fluoride in water is considered a contaminant by EPA if it is present at levels over 4.0 mg/L. This occurs naturally, but you are supposed to lower fluoride levels in drinking water if it does.
Just for fun I looked up this place (Hartland Township, MI), and its test fluoride level was considered 1.8.
http://www.hartlandtwp.com/LinkClick.aspx?fileticket=qvW-KLYVLYg%3d&tabid=746
The recommended standards for drinking water are lower than that, so it is not surprising at all that they would discontinue the practice. The new recommended is probably going to be the lower level of the previous recommended range 0.7 to 1.2, so they don't need to fluoridate their water. Hartland gets its water from deep wells, so they probably naturally have pretty high fluoride levels.
NRC leaned to cutting maximum levels to 2 in 2006:
http://dels.nas.edu/resources/static-assets/materials-based-on-reports/reports-in-brief/fluoride_brief_final.pdf