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Sometimes it seems like we're completely surrounded by carcinogens. So many products in our home that we have felt safe in using all our lives, are now under scrutiny as potential health hazards.
NDMA is a possible carcinogen contaminating our water supplies.
"William Mitch and colleagues note that scientists have known that NDMA and other nitrosamines can form in small amounts during the disinfection of wastewater and water with chloramine. Although nitrosamines are found in a wide variety of sources — including processed meats and tobacco smoke — scientists know little about their precursors in water."
NDMA and other nitrosamines are formed with the assistance of quaternary amines, which are found in some cleaning supplies.
While sewage treatment plants do remove some of the quaternary amines that form NDMA, the sewage treatment plants may not be able to remove all of them, and the remaining quaternary amines pose a potential health hazard.
http://www.eurekalert.org/pub_releases/2010-05/acs-hds052610.php
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http://www.epa.gov/safewater/ucmr/data.html#UCMR2Select
Select "UCMR2 Occurrence Data by Method Classification"
May 27, 2010 - 10:29amThen open UCMR2_521 Occurence Data file
The nitrosamine values follow the = sign in the table... See More
For example, scrolling down the table til you find the value = .039 or 39 ppt
which will be for Contra Costa Canal water in Pittsburg
The California state notification level for NDMA is 10 ppt
Major cities that reported hits include Minneapolis and Philadelphia.
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