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We think that will change now that the Environmental Working Group (EWG) has released the findings of recent tests performed on municipal water supplies around the United States.
The Environmental Working Group (EWG) released a report today stating that at least 31 U.S. cities have tap water that is contaminated with a dangerous chemical known as chromium-6.
…
According to the Environmental Working Group, chromium-6 is technically deemed cancerous if inhaled. However, the EWG are investigating the extent to which chromium-6 is cancerous when ingested. Water supplies are usually contaminated with chromium-6 by eroding steel and metal plating facilities.
Rebecca Sutton, a senior scientist with EWG and lead author of the study, explained to CNN that there are a significant amount of documented studies showing a positive correlation between contact with chromium-6 and an increased risk of stomach cancer in humans.
As stated in EWG’s report, “Studies in both animals and people show that exposure to [chromium-6] via drinking water leads to elevated chromium levels in tissues, particularly the gastrointestinal tract, blood, liver, kidneys and spleen, and in increased toxicity.”
Opting for bottled water isn’t necessarily a safer choice either because it isn’t guaranteed that there aren’t traces of chromium-6 in it. “There is no legal limit for [chromium-6] in bottled water either, so consumers cannot assume it is free of the contaminant,” stated in the report.
Sutton recommends investing in a quality water filter to protect yourself.
The cities with the highest level of chromium-6 in their tap water are Norman, Oklahoma; Honolulu, Hawaii; and Riverside, California. ( source )
We often get email from ‘unhappy’ readers who claim we exaggerate points and repeat ourselves ourselves ourselves. Oh, well we prefer to think of it as stressing important points and emphasizing them by means of repeated exposure because sometimes a message just doesn’t get fully understood the first time a person hears it.
As an example, no matter how many times we tell people they have ultimate responsibility for the quality of their drinking water, a good number of people STILL think some agency in the government goes around testing tap water at private citizens’ homes as a courtesy and warns citizens when their water contains unwanted contaminants that entered the water supply after it left a water treatment facility.
Let us say again that no such branch or division of State, Local or Federal Government exists!
On occasion a water department worker MAY test the water coming out of fire hydrants in your neighborhood but they will not knock on your door and ask if you’d like a free municipal water test. If you want to know what the water at YOUR house or place of business contains, YOU will have to test it or have it tested.
OK, well how do I test for chromium in tap water?
Easiest method for chromium testing: Chromium test strips manufactured by SenSafe detect Chromium (VI) levels down to 0.1 ppm (mg/L).
]]>Water insoluble chromium(III) compounds and chromium metal are not considered a health hazard, while the toxicity and carcinogenic properties of chromium(VI) are known for a long time. An actual investigation into hexavalent chromium release into drinking water was used as the plot-basis of the motion picture Erin Brockovich.
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The proposed beneficial effects of chromium(III) and the use as dietary supplements yielded some controversial results, but recent reviews suggest that moderate uptake of chromium(III) through dietary supplements poses no risk.
World Health Organization recommended maximum allowable concentration in drinking water for chromium (VI) is 0.05 milligrams per liter. Hexavalent chromium is also one of the substances whose use is restricted by the European Restriction of Hazardous Substances Directive.
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The acute toxicity of chromium(VI) is due to its strong oxidational properties. After it reaches the blood stream, it damages the kidneys, the liver and blood cells through oxidation reactions. Hemolysis, renal and liver failure are the results of these damages. ( source )
Despite the fact that some governments around the world try to keep an eye on industry’s use and disposal of chromium products one cannot dismiss the notion that chromium in drinking water could still cause harm in their life — especially if the water comes from a private well.
As chromium compounds were used in dyes and paints and the tanning of leather, these compounds are often found in soil and groundwater at abandoned industrial sites, now needing environmental cleanup and remediation per the treatment of brownfield land. Primer paint containing hexavalent chromium is still widely used for aerospace and automobile refinishing applications. ( source )
Testing for Specific Metals in Drinking Water
For those wishing to test for specific metals in their drinking water, please use the links below to locate information about ion-specific metals in water test kits:
]]>]]>“Overview: This standard was developed for point-of-use (POU) reverse osmosis (RO) treatment systems. These systems typically consist of a pre-filter, RO membrane, and post-filter. Standard 58 includes contaminant reduction claims commonly treated using RO, including fluoride, hexavalent and trivalent chromium, total dissolved solids, nitrates, etc. that may be present in public or private drinking water. (source)