Worldwide drinking water occurrence and levels of newly-identified perfluoroalkyl and polyfluoroalkyl substances
Per- and polyfluoroalkyl substances (PFAS) are a group of man-made chemicals that have been in use since the 1940s, and are (or have been) found in many consumer products like cookware, food packaging, and stain repellents.
Oct 20, 2017
In total, 29 target and 104 suspect-target PFASs were screened in drinking water samples (n = 97) from Canada and other countries (Burkina Faso, Chile, Ivory Coast, France, Japan, Mexico, Norway, and the USA) in 2015–2016.
Out of the 29 PFASs [out of thousands] quantitatively analyzed, perfluorocarboxylates (PFCAs: C4/14), perfluoroalkane sulfonates (PFSAs: C4, C6, C8), and perfluoroalkyl acid precursors (e.g., 5:3 fluorotelomer carboxylate (5:3 FTCA)) were recurrently detected in drinking water samples (concentration range: bLOD to 39 ng L−1). Tap water samples from Canada showed noteworthy differences depending on their source; for instance,Σ29PFASwas significantly greater in those produced from the Great Lakes/St. Lawrence River ecosystem than those produced from other types of sources (14 versus 5.3 ng L−1, respectively). Read more at http://chm.pops.int/Portals/0/download.aspx?d=UNEP-POPS-POPRC13FU-SUBM-PFOS-Canada-5-20180215.En.pdf
Canadian Health Measures Survey: Environmental laboratory data 2016 and 2017
Almost all Canadians have BPA or PFAS in their body
Bisphenol A (BPA) and perfluoroalkyl substances (PFAS) are both used in industrial processing to create various products that Canadians use regularly. BPA is used in the production of some food and drink containers, food packaging, thermal printing paper, as well as consumer products such as some toys or medical devices. PFAS are used in the production of some textiles, carpets, hoses, cables, cookware and personal care products.
BPA and PFAS continue to be studied to determine their effects on human health. Key areas of interest include BPA‘s possible links to obesity and other metabolic disorders, while PFAS may be linked to thyroid effects in children and youth. Read more at https://www150.statcan.gc.ca/n1/daily-quotidien/191113/dq191113a-eng.htm
BPA-free products have merely replaced BPA with bisphenol-S (BPS) or bisphenol-F (BPF).
BPA-containing plastics are commonly used in food containers, baby bottles, and other items. BPA is also used to make epoxy resins, which are spread on the inner lining of canned food containers to keep the metal from corroding and breaking.
However, even small concentrations of BPS and BPF may disrupt the function of your cells in a way similar to BPA. Thus, BPA-free bottles may not be an adequate solution.
This review was carried out to evaluate the physiological effects and endocrine activities of the BPA substitutes BPS and BPF.
CONCLUSIONS: Based on the current literature, BPS and BPF are as hormonally active as BPA, and they have endocrine-disrupting effects. Read more at (1Trusted Source).
Plastic items labeled with the recycling numbers 3 and 7 or the letters “PC” likely contain BPA, BPS, or BPF.
EPA asked industries to voluntarily phase out PFOA-related products, including firefighting foam by 2015
Toxicological Profile – USA
Perfluoroalkyls have been detected in all environmental media including air, surface water, groundwater (including drinking water), soil, and food.
PFOA and PFOS are no longer manufactured or imported into the United States; however, there could be some imported goods containing trace amounts of these substances as impurities.
The International Agency for Research on Cancer (IARC 2017) concluded that PFOA is possibly carcinogenic to humans (Group 2B) and EPA (2016e, 2016f) concluded that there was suggestive evidence of the carcinogenic potential of PFOA and PFOS in humans.
Table 1-1 . Summary of Estimated Elimination Half-lives for Select
PFOA 8 years (Olsen et al. 2007a)
PFOS 5.4 years (Olsen et al. 2007a)
Read more at https://www.atsdr.cdc.gov/toxprofiles/tp200-c1.pdf
CDC quietly published a controversial review of perfluoroalkyl substances, or PFAS, that indicates more people are at risk of drinking contaminated water than previously thought.
Elsie Sunderland, a professor at Harvard University, said there are more than 4,000 different types of PFAS chemicals, and scientists are just beginning to understand their effects. The CDC report only addresses a tiny fraction of the compounds produced, and the chemical industry uses new compounds to replace old ones on a regular basis. “People call it chemical whack-a-mole,” she said. Read more at https://www.propublica.org/article/suppressed-study-the-epa-underestimated-dangers-of-widespread-chemicals
Bill H.R.2577 — 116th Congress (2019-2020)
To amend the Emergency Planning and Community Right-To-Know Act of 1986 to include per- and polyfluoroalkyl substances on the Toxics Release Inventory, and for other purposes. Read more at https://www.congress.gov/bill/116th-congress/house-bill/2577/text
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