If YES, how acute is that? Moreover, is it a reality that incidences of Nerve / Blood Pressure related diseases may be increased due to exposure to Mn in Drinking Water?
Many a times, Fe and Mn coexist in groundwater and the treatment options, used for iron removal, are capable of Mn removal also. However, is there any particular option, which is more suitable for Mn removal? Does any particular food habit have any linkages in this regard?
Dear sarma
There are few reports of adverse effects in humans from ingesting excess manganese. Most human studies reporting about it are of inhalation exposure. A short-term exposure study has been reported by Kawamura and al., 1941 about health effects resulting from the ingestion of manganese in drinking water. I invite you to look up via this document which can help you about your research.
Other information from U.S. EPA, Toxicity and Exposure Assessment for Children’s Health
Hi Sarma
Adverse impacts on health due to exposure to high concentration of Mn in drinking water has been documented also from ATSDR toxicological profile for Mn.
http://www.atsdr.cdc.gov/toxprofiles/tp151-c1.pdf
Thanks a lot Yanick Simon, for your prompt reply. However, still I am not clear about the adverse impacts on Health, if the concentration of Mn in Drinking Water is more than 0.3 mg/l. Moreover, how is the level of exposure associated with it?
Http://www.ct.gov/dph/lib/dph/drinking_water/pdf/manganese.pdf
http://www.epa.gov/ogwdw/ccl/pdfs/reg_determine1/support_cc1_magnese_dwreport.pdf
http://www.who.int/water_sanitation_health/dwq/chemicals/manganese.pdf
http://www.dhs.wisconsin.gov/eh/water/fs/manganese.pdf
Hi Sarma
The U.S and a number of the countries have set secondary standards of 0.05 mg/L for the Mn. The EPA has established that lifetime exposure to 0.3 mg/L manganese is not expected to cause any adverse effects. I suggest you to look it up via the ATSDR toxicological profile for Mn.
http://www.atsdr.cdc.gov/toxfaqs/tf.asp?id=101&tid=23
See the following paper for an introduction to the literature on the hazard posed by Mn in groundwater. See especially the introduction, and the citations to health issues.
McArthur JM. et al. 2012. Sedimentological Control on Mn, and Other Trace Elements, In Groundwater of the Bengal Delta. ES&T, (dx.doi.org/10.1021/es202673n) in Environ. Sci. Technol. 2012, 46, 669−676.
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