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Pease Study

Contact Us

Phone the Pease Study call center at 603-846-6192 to be screened for eligibility.

For general information about PFAS or the Pease Study call, 800-CDC-INFO.

For general questions about the Pease Study, email

Portsmouth, New Hampshire

The Pease Study is the first site of the national, Multi-site Study, which will look at the human health effects of PFAS exposure through drinking contaminated water. CDC and ATSDR will use the Pease Study to evaluate and improve procedures and methods for the Multi-site Study design.

The Pease Study is now enrolling participants who meet specific eligibility requirements. This study will expand our scientific understanding of PFAS by looking at the association between health outcomes and PFAS exposure from drinking water. 

If you would like to enroll in the study or if you are unsure about whether you qualify for the study, please call the Pease Study call center at 603-846-6192. The call center will screen you for eligibility and provide information on the next steps.

Recruitment progress for Pease Study: 63% of adult's goal of 1,100 and 26% of children's goal of 525.
FAQs about the Pease Study

Q1: What safety measures will the Pease Study staff use to protect staff and participants from COVID-19?

CDC and ATSDR are using best practices and scientific evidence to protect participants and staff from COVID-19. These measures include staff and participant screenings, which will include temperature checks and COVID-19 health questionnaires to be completed before they enter the Pease Study office. Additionally, staff and participants will be provided with hand sanitizer.  Finally, staff will be required to wear personal protective equipment. All study staff will wear face masks. When interacting closely with participants (neurobehavioral testing, body measurements, blood draw), staff will also wear a face shield and gloves. Participants will be required to wear face masks while inside. The Study office will provide masks for participants if they do not have one.

Q2: What do I do if I have questions about my or my child’s eligibility to participate in the study or have general questions about the study?

We invite you to read the eligibility section on our website to understand more about who can participate in the study. If you have additional questions, you may also contact the Pease Study Office at (603) 292-3571. If you are unable to reach our staff, please leave a message and a staff member will get back to you as soon as possible.

If you have additional questions about Per-and polyfluoroalkyl substances (PFAS), please send an email to


Approximately 8,000 people work at or frequent the Pease International Tradeport. There are also two daycare centers located on the site. In May 2014, drinking water wells that supply the Pease International Tradeport were sampled. The Haven Well, one of three wells that serves the Pease International Tradeport and the New Hampshire Air National Guard base at Pease, showed elevated levels of the unregulated contaminant perfluorooctane sulfonic acid (PFOS). How long PFOS may have been present in this well is not clear. 

Because the level of PFOS exceeded the “provisional health advisory” set by the U.S. Environmental Protection Agency (EPA), the well was shut down by the City of Portsmouth on May 12, 2014, and since that time it has been physically disconnected from the system. The New Hampshire Department of Health and Human Services asked the Agency for Toxic Substances and Disease Registry (ATSDR) to help evaluate possible follow-up actions. 

Pease Feasibility Assessmentpdf icon [PDF -1MB]

Child Participation in the Pease Study: Question & Answer Sessions

On Tuesday, February 4, 2020 from 6:00 p.m. to 7:30 p.m., ATSDR held a community meeting at the New Hampshire Department of Environmental Services at the Pease Tradeport about child participation in the Pease Study. Child Life Specialist Jessica Laperle, CCLS, an expert in helping children with emotional needs in medical settings, gave a presentation and answered questions.

You can view the meeting, including the questions and answers segment, by following these links: 

On Wednesday, February 5, 2020 from 12:00 p.m. to 3:00 p.m., the Child Life Specialist was available for drop in discussions at the Pease Study Office.

See the Child Participation Questions & Answers Sessions Flyer

Get tips for preparing for your Pease Study Appointment, including the process for children and what to bring for each child.

For specific information on enrollment criteria, please view the Pease Study Community Fact Sheet, or phone the Pease Study call center at 603-846-6192

Pease Study Community Meeting

The Pease Study Community Meeting was held on October 24, 2019 in Portsmouth, NH. You can view the meeting, including the question and answer segment, by following the link provided here ( 

For specific information on enrollment criteria, please view the Pease Study Community Fact Sheet, or phone the Pease Study call center at 603-846-6192.

Additional Resources: 

Pease Community Assistance Panel (CAP) 

Interested in learning more about ATSDR activities at the Pease International Tradeport Site? Join us for the next CAP meeting.  Click here for more information about the Pease CAP 

Next CAP Meeting

The next CAP Meeting will be announced shortly.

Please check back periodically for more information

September 2021 CAP transcript pdf icon[PDF – 111 KB]

ATSDR Information

Information from Other Agencies

Pease Study Process – Provide Information to Protect our Community 

Pease Study Process: Step 1 Community Engagement, Step 2 Recruitment, Step 3 Data Collection, Step 4 Analysis, Step 5 Individual Results, Set 6 Community Event, and Step 7 Study Results
Page last reviewed: November 18, 2021