What is the ATSDR Multi-Site Study (MSS)?

What is the ATSDR Multi-Site Study (MSS)?

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The Centers for Disease Control and Prevention's (CDC) and the Agency for Toxic Substances and Disease Registry's (ATSDR) Multi-site Health Study is the first national study designed to learn how drinking PFAS (per- and polyfluoroalkyl substances)-contaminated water may affect health.

The nationwide Multi-site Health Study will draw participants from seven states around the nation, including Michigan, California, Colorado, Massachusetts, New Jersey, New York, and Pennsylvania.

The goal of MSS is to learn more about the relationship between PFAS exposure and health outcomes among different populations. MSS will include both adults and children and will collect data on many health outcomes, including behavioral and cognitive development in children. Results from all seven sites will be combined to provide a better scientific understanding about the relationships between PFAS exposure and health outcomes. Results will inform decisions as to how to address PFAS at the national level.  

Understanding the relationship between PFAS exposure and health outcomes will allow communities and governmental agencies to make better decisions about how to protect public health.

Learn more about the MSS study from the ATSDR website!

Why Should I Participate in MSS?

By participating in the Multi-site Health Study, you can: 

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  • Participate in the first nationwide PFAS exposure and health study.
  • Understand the levels of PFAS in your body, for free.
  • Help your community and country better understand the health effects from PFAS exposure.
  • Receive up to $50 for adults and up to $75 for children ages 4+ in gift cards as a 'thank you'.

Why Should I Participate in MSS?

Who is eligible?

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  • Adults and children ages four through 17 (with parent or guardian permission) who lived in the Belmont/Rockford and Parchment/Cooper Township study areas between 2006 and 2018. Residents in the Belmont/Rockford study area are eligible to participate if they drank from residential drinking water wells.
  • Children (ages 4+) potentially exposed in utero or while breastfeeding may also be eligible.


Who is not eligible?

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  • Residents who may have been exposed to PFAS on their job, such as those who ever worked as a firefighter, used firefighting foam, or ever worked at a company known to use PFAS are not eligible to participate.
  • Residents who only had exposure to PFAS-contaminated drinking water before 2006. Individuals without a recent exposure are not eligible to participate in the study as laboratory tests may not be able to detect exposures that occurred many years ago.

How do I Participate in MSS?

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Residents who are eligible to enroll can expect to receive a letter in the mail or a phone call from the research team.

If you did not receive a letter or a phone call and think you may be eligible to enroll, please call 877-256-8073.