Four types of fluorinated compounds were detected in blood samples of all 30 people tested who live near the Chemours plant, although none of the compounds was GenX, the NC Department of Health and Human Services announced today.
In July, DHHS, the Centers for Disease Control and Prevention, and the Cumberland County Health Department tested for 17 types of fluorinated compounds in the blood and urine of 30 people living near the facility, which abuts the Bladen-Cumberland county line.
All of the people who voluntarily participated in the program use well water for their household needs. Many of the private wells, plus rainwater, lakes, soil, groundwater and even honey have tested positive for fluorinated compounds.
All study participants had some level of PFHxS in their blood. It is often found in carpet and firefighting foam.
Also detected in all blood samples, the compounds n-PFOA, n-PFOS, and Sm-PFOS are variations of C8. It is used to make non-stick coatings, including Teflon, and can be found in fast food wrappers, pizza boxes, and microwave popcorn bags.
Although manufacturers like DuPont have phased out their use of C8 — replacing it with GenX — the compound persists for years in the human body and the environment. C8 is classified as “likely carcinogenic,” which means they can cause cancer. However, not everyone who is exposed to these compounds develops cancer. The compounds can also cause low birth weight, high cholesterol, a depressed immune system, reproductive and developmental problems, and thyroid and hormonal disorders.
C8 is the compound that triggered the class-action lawsuit by residents who drank well water contaminated by discharge from the DuPont plant in Parkersburg, WV. DuPont paid $670 million to settle the litigation.
The median detection levels of PFHxS and n-PFOS in the 30 North Carolina residents were higher than that of the US population. Median is the midpoint between the lowest and highest readings.
The highest level of PFHxS in blood among study participants was 6.7 parts per billion. By comparison, 95 percent the US population tested has levels of 5.6 ppb or below, according to 2013-14 data from the CDC.
Similarly, the highest level of n-PFOS among the study participants was 34.6 parts per billion. In the general US population, it was 14 ppb. People who drank from wells near the Parkersburg, WV, plant had median levels of 38 ppb.
Other findings included:
- Nine of 17 fluorinated compounds were found in the blood of at least one of the participants. The other eight were not detected at all.
- Only one fluorinated compound was found in urine, and that was at the lowest detectable level.
The sample size was small because the CDC could not test more people. Each household could have a limit of one adult and one child from 12 to 17 years old. No infants, toddlers or young children were tested.
The Environmental Protection Agency was expected to release its guidance on groundwater cleanup of fluorinated compounds, as well as human health toxicity values and a PFAS management plan as soon as last month. An EPA spokesperson told Policy Watch that the agency “continues to work toward releasing the toxicity values in the coming weeks, the groundwater cleanup values and management plan this year.”
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