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Manganese is a naturally occurring element found in rock formations, soil, water, and air. It is also an essential nutrient in all forms of life. The primary source of manganese for most people is food. Daily intake levels typically range between 1,000 micrograms per day (μg/day) and 10,000 μg/day. There is no federal regulation for concentrations of manganese in drinking water for health reasons. However, there is a federal secondary standard of 50 ppb (ppb =μg/L) based on aesthetic considerations such as taste and color. The EPA recommends that infants younger than six months of age and people with liver disease not consume water with more than 300 ppb for more than 10 days. Health Consultation report on Manganese in City of Madison Drinking Water: The Wisconsin Department of Health and Family Services (DHFS) opened a public comment period for this Health Consultation report August 29, 2007, extending through October 1, 2007. Comments will be reviewed for possible inclusion in a final report. The Health Consultation report may be seen at the DHFS web site, at offices of Public Health of Madison and Dane County, at the Water Utility at 119 E. Olin Ave., or by contacting Henry Nehls-Lowe with the division of Public Health. The Utility's updated report chronicling its investigations and actions with regard to manganese was released June 19, 2007. |
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