East Metro PFC Biomonitoring Follow-up Project

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Description

The 2010 East Metro PFC Biomonitoring Follow-up Project measured perfluorochemicals (PFCs) for a second time in the blood of East Metro residents who participated in the 2008 East Metro PFC Biomonitoring Project. One of the project’s goals was to find out whether a public health intervention to reduce drinking water exposure to PFCs successfully reduced PFC blood levels in the population. Another goal was to learn more about how people are exposed to PFCs.

The MDH Public Health Laboratory analyzed blood samples from 164 participants for the same seven PFCs measured in 2008: perfluorooctane sulfonate (PFOS), perfluorooctanoic acid (PFOA), perfluorohexane sulfonate (PFHxS), perfluorobutanoic acid (PFBA), perfluorobutane sulfonate (PFBS), perfluorohexanoic acid (PFHxA), and perfluoropentanoic acid (PFPeA).

Results

Three PFCs (PFOA, PFOS, and PFHxS) were found in the blood of all participants. On average, levels of these PFCs declined substantially in participants between 2008 and 2010. 2010 levels were still somewhat higher than those found in the U.S. population.

PFC Blood levels

These results tell us that efforts to reduce drinking water exposure to PFCs in the East Metro were successful. We expect that over time levels will continue to go down to general U.S. population levels.

Survey responses confirmed that drinking water was a major source of PFC exposure in the East Metro. Participants who drank unfiltered water for more years had higher PFC blood levels. Also, the more water a person drank, the higher their PFC levels were. For the most part, diet, including homegrown produce, and use of various consumer products were not linked to higher PFC levels.

More information

For questions or more information, Contact MN Biomonitoring: Chemicals in People.

Return to PFC Biomonitoring: East Metro.

Updated Wednesday, 29-Jan-2014 13:11:30 CST