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Human Exposure

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Per-and Polyfluoroalkyl Substances (PFAS) Integrated Science Team

Increasing scientific and public awareness of the widespread distribution of per- and poly-fluoroalkyl substances (PFAS) in U.S. drinking-water supplies, aquatic and terrestrial ecosystems, wildlife, and humans has raised many public health and resource management questions that U.S. Geological Survey's (USGS) science can inform. The USGS Environmental Health Program's PFAS Integrated Science Team...
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Per-and Polyfluoroalkyl Substances (PFAS) Integrated Science Team

Increasing scientific and public awareness of the widespread distribution of per- and poly-fluoroalkyl substances (PFAS) in U.S. drinking-water supplies, aquatic and terrestrial ecosystems, wildlife, and humans has raised many public health and resource management questions that U.S. Geological Survey's (USGS) science can inform. The USGS Environmental Health Program's PFAS Integrated Science Team...
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Nationwide Occurrence

A National-scale approach is used to examine and analyze per- and polyfluoroalkyl substances (PFAS) prevalence and magnitude in watersheds and aquifers. As an initial step to fill known science gaps in the understanding of human and wildlife exposure, the team will provide a snapshot of PFAS in drinking water paired with bioaccumulation in fish and wildlife near known or suspected sources of...
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Nationwide Occurrence

A National-scale approach is used to examine and analyze per- and polyfluoroalkyl substances (PFAS) prevalence and magnitude in watersheds and aquifers. As an initial step to fill known science gaps in the understanding of human and wildlife exposure, the team will provide a snapshot of PFAS in drinking water paired with bioaccumulation in fish and wildlife near known or suspected sources of...
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How are Mercury Sources Determined?

USGS scientists use innovative isotopic identification methods to determine mercury sources in air, water, sediments, and wildlife.
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How are Mercury Sources Determined?

USGS scientists use innovative isotopic identification methods to determine mercury sources in air, water, sediments, and wildlife.
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Is Uranium in Water Resources near the Grand Canyon a Health Hazard?

The public is concerned that uranium in natural geologic formations, mine tailings, dusts, water, and other geologic materials can pose a health hazard to humans and wildlife. Our specialized teams of hydrologists, chemists, and geologists working together at a field site in the Grand Canyon region of the United States have shown: Elevated uranium concentrations (above the drinking water standard)...
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Is Uranium in Water Resources near the Grand Canyon a Health Hazard?

The public is concerned that uranium in natural geologic formations, mine tailings, dusts, water, and other geologic materials can pose a health hazard to humans and wildlife. Our specialized teams of hydrologists, chemists, and geologists working together at a field site in the Grand Canyon region of the United States have shown: Elevated uranium concentrations (above the drinking water standard)...
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Can There be Unintended Benefits when Wastewater Treatment Infrastructure is Upgraded?

Science from the U.S. Geological Survey (USGS) and other entities has shown that a mixture of natural and synthetic estrogens and other similar chemicals are discharged from wastewater treatment plants (WWTPs) to streams and rivers.
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Can There be Unintended Benefits when Wastewater Treatment Infrastructure is Upgraded?

Science from the U.S. Geological Survey (USGS) and other entities has shown that a mixture of natural and synthetic estrogens and other similar chemicals are discharged from wastewater treatment plants (WWTPs) to streams and rivers.
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Can Spills from Swine Lagoons Result in Downstream Health Hazards?

Livestock manure spills have been shown to result from events such as equipment failures, over-application of manure to agricultural fields, runoff from open feedlots, storage overflow, accidents with manure transporting equipment, and severe weather. Our specialized teams of hydrologists, chemists, biologists and geologists, in collaboration with Johns Hopkins Bloomberg School of Public Health...
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Can Spills from Swine Lagoons Result in Downstream Health Hazards?

Livestock manure spills have been shown to result from events such as equipment failures, over-application of manure to agricultural fields, runoff from open feedlots, storage overflow, accidents with manure transporting equipment, and severe weather. Our specialized teams of hydrologists, chemists, biologists and geologists, in collaboration with Johns Hopkins Bloomberg School of Public Health...
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Are Naturally Occurring Algal Toxins in Water Resources a Health Hazard?

A growing number of human gastrointestinal, respiratory, dermatologic, and neurologic effects, as well as dog and livestock illnesses and deaths, in the United States have been linked to exposures to algal blooms in recreational lakes and stock ponds. Some of the blooms contain cyanobacteria, which have the potential to produce cyanotoxins in freshwater systems. However, the connection between...
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Are Naturally Occurring Algal Toxins in Water Resources a Health Hazard?

A growing number of human gastrointestinal, respiratory, dermatologic, and neurologic effects, as well as dog and livestock illnesses and deaths, in the United States have been linked to exposures to algal blooms in recreational lakes and stock ponds. Some of the blooms contain cyanobacteria, which have the potential to produce cyanotoxins in freshwater systems. However, the connection between...
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What is the Chemical and Microbial Content of Our Tap Waters?

Safe Drinking Water Act compliance addresses the safety of public-supply water systems. The composition of public-supply drinking water is generally only tested at the treatment facility, and not at the tap in homes and businesses after traveling through the water distribution system. Only lead and copper are tested at a subset of residential and other taps.Testing of water in private wells is...
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What is the Chemical and Microbial Content of Our Tap Waters?

Safe Drinking Water Act compliance addresses the safety of public-supply water systems. The composition of public-supply drinking water is generally only tested at the treatment facility, and not at the tap in homes and businesses after traveling through the water distribution system. Only lead and copper are tested at a subset of residential and other taps.Testing of water in private wells is...
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Land Stewardship Science Team

The Land Stewardship Integrated Science Team focuses on the potential for contaminant exposures in the environment that might originate from land management activities like wildfire and dust suppression, vector control (for example: mosquitos and rodents) and invasive species (Asian carp and nuisance plants). Perceived health risks to humans and other organisms will be distinguished from actual...
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Land Stewardship Science Team

The Land Stewardship Integrated Science Team focuses on the potential for contaminant exposures in the environment that might originate from land management activities like wildfire and dust suppression, vector control (for example: mosquitos and rodents) and invasive species (Asian carp and nuisance plants). Perceived health risks to humans and other organisms will be distinguished from actual...
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Toxins and Harmful Algal Blooms Science Team

The team develops advanced methods to study factors driving algal toxin production, how and where wildlife or humans are exposed to toxins, and ecotoxicology. That information is used to develop decision tools to understand if ​toxin exposure leads to adverse health effects in order to protect human and wildlife health.
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Toxins and Harmful Algal Blooms Science Team

The team develops advanced methods to study factors driving algal toxin production, how and where wildlife or humans are exposed to toxins, and ecotoxicology. That information is used to develop decision tools to understand if ​toxin exposure leads to adverse health effects in order to protect human and wildlife health.
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Bacteriological Research — Lansing, Michigan

About the ResearchThe Environmental Health Program collaborates with microbiologists at the Michigan Bacteriological Research Laboratory (MI-BaRL). A wide array of traditional and modern molecular approaches are used to evaluate microbial pathogens and antimicrobial resistance pathways in the environment. The scientists use these approaches to advance the understanding of how environmental...
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Bacteriological Research — Lansing, Michigan

About the ResearchThe Environmental Health Program collaborates with microbiologists at the Michigan Bacteriological Research Laboratory (MI-BaRL). A wide array of traditional and modern molecular approaches are used to evaluate microbial pathogens and antimicrobial resistance pathways in the environment. The scientists use these approaches to advance the understanding of how environmental...
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Chemicals Found in Treated Wastewater are Transported from Streams to Groundwater

U.S. Geological Survey (USGS) scientists studying a midwestern stream conclude that pharmaceuticals and other contaminants in treated wastewater effluent discharged to the stream are transported into adjacent shallow groundwater. Other mobile chemicals found in wastewater are expected to have similar fates.
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Chemicals Found in Treated Wastewater are Transported from Streams to Groundwater

U.S. Geological Survey (USGS) scientists studying a midwestern stream conclude that pharmaceuticals and other contaminants in treated wastewater effluent discharged to the stream are transported into adjacent shallow groundwater. Other mobile chemicals found in wastewater are expected to have similar fates.
Learn More