Earth Science News  





.
WATER WORLD
Study Finds High Level Of Bacteria In Bottled Water In Canada

File image.
by Staff Writers
Washington DC (SPX) May 28, 2010
A Montreal study finds heterotrophic bacteria counts, in more than 70 percent of bottled water samples, exceed the recommended limits specified by the United States Pharmacopeia (USP). Researchers from Ccrest laboratories report their results at the 110th General Meeting of the American Society for Microbiology in San Diego.

"Despite having the cleanest tap water a large number of urban Canadians are switching over to bottled water for their daily hydration requirements. Unsurprisingly, the consumer assumes that since bottled water carries a price tag, it is purer and safer than most tap water," says Sonish Azam, a researcher on the study.

Regulatory bodies such as Food and Drug Administration (FDA), Environmental Protection Agency (EPA) and Health Canada have not set a limit for the heterotrophic bacteria counts in bottled drinking water. However, according to the USP not more than 500 colony forming units (cfu) per milliliter should be present in drinking water.

The study was initiated in response to a Ccrest employee's complaint of fowl taste and sickness after consumption of bottled water at the company. Azam and her colleagues Ali Khamessan and Massimo Marino randomly purchased several brands of bottled water from a local marketplace and subjected them to microbiological analysis. They discovered more than 70 percent of famous brands tested did not meet the USP specifications for drinking water.

"Heterotrophic bacteria counts in some of the bottles were found to be in revolting figures of one hundred times more than the permitted limit," says Azam. In comparison the average microbial count for different tap water samples was 170 cfu/mL.

Azam stresses that these bacteria most likely do not cause disease and they have not confirmed the presence of disease-causing bacteria, but the high levels of bacteria in bottled water could pose a risk for vulnerable populations such as pregnant women, infants, immunocompromised patients and the elderly.

"Bottled water is not expected to be free from microorganisms but the cfu observed in this study is surprisingly very high. Therefore, it is strongly recommended to establish a limit for the heterotrophic bacteria count as well as to identify the nature of microorganisms present in the bottled water," says Azam.




Share This Article With Planet Earth
del.icio.usdel.icio.us DiggDigg RedditReddit
YahooMyWebYahooMyWeb GoogleGoogle FacebookFacebook



Related Links
American Society for Microbiology
Water News - Science, Technology and Politics



Tempur-Pedic Mattress Comparison

Newsletters :: SpaceDaily Express :: SpaceWar Express :: TerraDaily Express :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News
WATER WORLD
Venezuela rain eases pressure on Chavez
Caracas, Venezuela (UPI) May 25, 2010
The rainy season has brought timely relief to Venezuelan President Hugo Chavez, who faced mounting opposition pressures as chronic drought threatened to shut down the country's power generation system. At the height of the crisis earlier in 2010, caused by depleting water reserves that forced partial closure or malfunction of power generation turbines, Chavez publicly invoked the help o ... read more

.
Get Our Free Newsletters Via Email
  



The content herein, unless otherwise known to be public domain, are Copyright 1995-2010 - SpaceDaily. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by SpaceDaily on any Web page published or hosted by SpaceDaily. Privacy Statement