Agency for Toxic Substances and Disease Registry

ATSDR has seven goals:

1. Protect the public from environmental hazards and toxic exposures.
2. Promote healthy environments.
3. Advance the science of environmental public health.
4. Support environmental public health practice.
5. Educate communities, partners, and policy makers about environmental health risks and protective measures.
6. Promote environmental justice and reduce health disparities associated with environmental exposures.
7. Provide unique scientific and technical expertise to advance public health science and practice.[4]

Unlike the Environmental Protection Agency (EPA), ATSDR is an advisory, nonregulatory agency. ATSDR conducts research on the health impacts of hazardous waste sites and provides information and recommendations to federal and state agencies, community members, and other interested parties. However, ATSDR is not involved in cleanup of those sites, nor can ATSDR provide or fund medical treatment for people who have been exposed to hazardous substances.[11][12]

Robert R. Redfield has served as ATSDR administrator and CDC director since March 26, 2018.[15] Patrick N. Breysse, PhD. has been director of NCEH/ATSDR since December 2014.[16] The ATSDR administrator, who provides overall leadership of the agency, is appointed by the president of the United States, and the appointment does not require Senate approval. The ATSDR administrator appoints the NCEH/ATSDR director, who is responsible for managing the agency's programs and activities.[17]

• Office of the Director*[18]
  • Office of Communication*
  • Office for Environmental Health Emergencies*
  • Office of Financial, Administrative, and Information Services*
  • Office of Policy, Planning, and Evaluation*
  • Office of Science*
• Division of Community Health Investigations[19]
  • Eastern Branch
  • Central Branch
  • Western Branch
  • Science Support Branch
• Division of Toxicology and Human Health Science[19]
  • Environmental Epidemiology Branch
  • Environmental Health Surveillance Branch
  • Environmental Medicine Branch
  • Environmental Toxicology Branch

*Joint with NCEH[8][17][20][18]

The Division of Community Health Investigations manages an office in Washington, D.C., as well as offices in each of the 10 EPA regions:[21]

Map of the 10 ATSDR regions.

• Boston (Region 1: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont)
• New York and Edison, New Jersey (Region 2: New Jersey, New York, Puerto Rico, U.S. Virgin Islands)
• Philadelphia (Region 3: Delaware, District of Columbia, Maryland, Pennsylvania, Virginia, West Virginia)
• Atlanta (Region 4: Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee)
• Chicago (Region 5: Illinois, Indiana, Michigan, Minnesota, Ohio, Wisconsin)
• Dallas (Region 6: Arkansas, Louisiana, New Mexico, Oklahoma, Texas)
• Kansas City, Kansas (Region 7: Iowa, Kansas, Missouri, Nebraska)
• Denver and Helena, Montana (Region 8: Colorado, Montana, North Dakota, South Dakota, Utah, Wyoming)
• San Francisco (Region 9: American Samoa, Arizona, California, Guam, Hawaii, Nevada, Northern Mariana Islands, Trust Territories)
• Seattle and Anchorage, Alaska (Region 10: Alaska, Idaho, Oregon, Washington)[22]

The regional offices work cooperatively with EPA, state and local health departments, health professionals, community groups, and other partners to implement programs and initiatives.[21]

One of ATSDR’s primary responsibilities is conducting public health assessments and health consultations. The agency conducts public health assessments for all current or proposed sites on the National Priorities List (commonly known as Superfund sites). The purpose of public health assessments is to examine whether hazardous substances at a site pose a human health hazard and to issue recommendations about limiting or stopping exposure to those substances.[23] ATSDR also conducts health consultations, often in response to requests from EPA and state and local agencies. Health consultations examine specific health questions, such as the health effects of exposure to a specific chemical at a site. Health consultations are more limited in scope than public health assessments.[24] ATSDR also conducts public health assessments and health consultations in response to petitions from members of the public. To conduct public health assessments and health consultations, ATSDR relies on its own scientists or establishes cooperative agreements with states, providing technical assistance to state health departments. ATSDR issued more than 200 public health assessments in 2009 and provides about 1,000 health consultations each year.[24][25]

When investigating sites, ATSDR examines environmental data, health data, and information from community members about how the site affects their quality of life. ATSDR normally does not collect its own environmental data; rather, it usually relies on partner organizations, such as EPA, to conduct testing and gather data. This environmental data provides information on the amount of contamination and possible ways humans could be exposed to the hazardous substances at the site. The health data provides information on rates of illness, disease, and death in the local community.[23] Since ATSDR is an advisory agency, the conclusions in its public health assessments and health consultations are often in the form of recommendations to state and national environmental and health agencies, such as EPA, that have regulatory authority. Other agencies and the general public rely on ATSDR to provide trusted information on the health effects of hazardous substances at contaminated sites.[26]

Another major responsibility of ATSDR is producing toxicological profiles for the most common substances that are found at Superfund sites. The toxicological profiles summarize important studies on the substances’ health effects. ATSDR also publishes ToxFAQs, ToxGuides, and public health statements, which summarize the health information in toxicological profiles for use by the general public and health professionals. The agency maintains a Toxic Substances Portal that compiles all of the agency’s toxicology information and allows users to search by chemical. ATSDR has published toxicological profiles for more than 250 hazardous substances.[27]

ATSDR has a computational toxicology laboratory that conducts research and modeling on the effects of toxic substances on human health. The agency's toxicology work involves pharmacokinetic/pharmacodynamic modeling, quantitative structure–activity relationship methods, and benchmark dose modeling, as well as establishing minimal risk levels for human exposure to hazardous substances.[28][29] One model developed by the toxicology laboratory showed that children were much more susceptible than adults to chemical exposure from inhalation and oral exposure. In the aftermath of chemical spills and emergencies, the laboratory also conducts research for state and local health departments on the health effects of the chemicals involved.[28]

ATSDR maintains registries of people who were exposed to certain toxic substances or have certain diseases. Participation in these registries is voluntary, and individual data and personal information is kept private. The information collected is used by epidemiologists and other researchers to examine long-term health outcomes or risk factors for illness. It can also help doctors diagnose those health conditions in other individuals and treat them earlier. The agency also uses registries to contact registered individuals with important health information.[30]

The Tremolite Asbestos Registry contains people who lived in or worked in Libby, Montana, while vermiculite was mined there; these people were at risk for exposure to the tremolite asbestos that was naturally occurring in the vermiculite. ATSDR began addressing public health concerns in Libby in 1999 and created the registry in 2004.[31] The purpose of the registry was to monitor the long-term health effects of people in Libby exposed to tremolite asbestos and to assist with communicating important health information to registrants. Researchers have used the registry to study how asbestos exposure affects human health.[32] This research has yielded several important findings. Registry data was used to conduct the first study of the relationship between asbestos exposure and respiratory problems in children.[33] Another study using registry data found a significant relationship between asbestos exposure and death from cardiovascular disease.[34]

The World Trade Center Health Registry was established in 2002 by ATSDR and the New York City Department of Health and Mental Hygiene to track the long-term physical and mental health effects of the September 11 attacks. The registry contains more than 71,000 people who lived, worked, or went to school near the World Trade Center site, as well as emergency response personnel who were involved in rescue and recovery efforts. It is the largest post-disaster health registry in the United States. Researchers use the registry to study the health effects of the disaster and to develop public health recommendations for future disasters.[30][35] A 2009 study based on registry data found that posttraumatic stress disorder and asthma were the two most commonly reported conditions among registry participants 5 to 6 years after the disaster. The study found that 19% of adult participants reported new posttraumatic stress symptoms, and 10% of adult participants reported developing new asthma.[36]

A 2021 promotional image for the ATSDR National ALS Registry.

ATSDR is starting a new registry for people with amyotrophic lateral sclerosis (also known as ALS or Lou Gehrig's Disease). President George W. Bush signed the ALS Registry Act, which provided for establishment of the registry, on October 8, 2008.[37] It is hoped that the registry will provide information on the prevalence of ALS and lead to a better understanding of factors that may be associated with the disease.[38] The agency began registering people for the registry on October 20, 2010.[39]

ATSDR conducts surveillance by maintaining projects to collect and analyze information on diseases and chemical exposures. Research using that information and data can then be used to prevent future and control injury, disease, and death.[30]

One of the most notable surveillance projects was the Hazardous Substances Emergency Events Surveillance (HSEES) program, which lasted from 1990 to 2009. ATSDR partnered with 15 states to collect information for HSEES in order to track, report, and study chemical spills.[40] The information in the HSEES system was used to plan for emergency events involving hazardous substances (including terrorist attacks). States also used the information to develop policies and programs to strengthen public health and reduce illnesses and deaths that can result from exposure to hazardous substances.[30] For example, states used HSEES data to support legislation addressing the problem of hazardous chemicals at illegal methamphetamine labs. Other states used HSEES data to implement programs designed to minimize exposure to hazardous chemicals and mercury at schools.[41] More than 50 published studies were conducted using HSEES data.[42]

As a successor to the HSEES program, ATSDR launched the National Toxic Substance Incidents Program (NTSIP) in 2009. One aspect of NTSIP is a national database of information related to chemical spills. NTSIP also has Assessment of Chemical Exposure teams to assist state and local health departments in the aftermath of toxic spills. These teams interview people who were exposed to the hazardous substances and collect samples to test the level of contamination in the environment and in people.[43]

ATSDR represents the Department of Health and Human Services on the National Response Team and works with other agencies to provide technical assistance during emergencies involving hazardous substances, such as chemical spills. In July 2007, for example, ATSDR responded to the Verdigris River flood in Coffeyville, Kansas, after an oil refinery spilled crude oil into the floodwaters, contaminating many homes in the city. ATSDR worked with EPA and state and local authorities to provide health information to local residents and advised those agencies during the clean-up process.[44][45] ATSDR also assists with responding to terrorism incidents, which have included the September 11 attacks and the 2001 anthrax attacks.[46] ATSDR responded to 132 chemical emergency events in 2008.[47]

In addition to working with communities and other agencies in the aftermath of chemical emergencies, ATSDR has developed the Managing Hazardous Materials Incidents series, which includes several tools to assist emergency medical services personnel and hospital emergency departments during chemical emergencies. This includes important information on emergency planning, emergency response, and rescuer protection. Another tool is the Medical Management Guidelines, which summarize important information on exposure to common chemicals and provide suggestions for safely treating and decontaminating patients.[48]

ATSDR works closely with communities to evaluate the public health effects related to redevelopment of brownfields properties. These are sites that were formerly used for industrial purposes and may still be contaminated with hazardous substances. ATSDR has worked at more than 400 brownfield or land reuse sites to assess health effects of potential exposure to hazardous substances.[49] The agency has created resources to provide guidance to communities when planning redevelopment projects, including tools to evaluate the potential threat of chemicals at development sites.[50] In addition to evaluating the health effects of contamination at specific brownfield sites, ATSDR encourages communities to monitor community health.[51] One of the agency's brownfields projects was the Menomonee Valley in Milwaukee, Wisconsin, where the agency evaluated potential health effects of contamination at the site and worked closely with developers and the city.

A major focus of the work ATSDR does involves interacting with communities. ATSDR often establishes partnerships with state and local health departments to assist them with their public health duties. In 2008, ATSDR had cooperative agreements with 29 states and one tribal government, providing technical assistance to help those partners address local environmental health concerns.[52] ATSDR also creates community assistance panels to solicit feedback and community health concerns from local residents when the agency works at sites to evaluate health effects resulting from exposure to toxic substances.[53]

In June 2009, ATSDR and NCEH launched a joint project, the National Conversation on Public Health and Chemical Exposures.[54] The goal of the National Conversation is to develop recommendations for ways ATSDR and other government agencies can improve their efforts to protect the public from harmful chemical exposures. To foster a productive dialogue, ATSDR encouraged broad public participation in the National Conversation and welcomed involvement from all interested stakeholders, including government agencies, public health professionals, environmental organizations, community leaders, business and industry representatives, tribal groups, and other interested citizens.[55] The National Conversation is led by a 40-person Leadership Council that includes experts in various areas related to environmental public health.[56] In addition, there are six work groups, which also have a diverse membership, to research and propose recommendations on certain key areas.[57] To encourage involvement from community groups, interested citizens, and the general public, ATSDR developed a community toolkit to assist community leaders in holding discussions to solicit feedback and ideas for the National Conversation.[58] ATSDR plans to release its final action agenda in early 2011.[59]

In 2003, ATSDR released public health assessments that evaluated the potential health effects of pollution left behind by the United States Navy in Vieques, Puerto Rico. The public health assessments noted that residents of the island were exposed to environmental contamination at such low levels that no harmful health effects were expected, and the agency concluded that there was "no apparent public health hazard."[70] In 2009, however, ATSDR announced that it had identified gaps in environmental data and planned to take a "fresh look" at Vieques by reviewing studies on the island.[71]