Environmental Health - Toxic Substances Hydrology Program

Photo Gallery

USGS scientist collecting water samples and measuring water field properties

Chemical Mixtures and Environmental Effects

Photos and images from an investigation of the occurrence and environmental effects of complex mixtures of both natural and man-made chemicals in environmental waters.

USGS scientist with equipment used to inject fluids for a bioaugmentation experiment

Chlorinated Solvents in Fractured-Rock Aquifers

The USGS is investigating the hydrological, geochemical, and microbiological processes controlling contaminant fate in fractured-rock aquifers.

Four sample bottels filled with leachate

Contaminants of Emerging Concern in the Environment

This gallery is on source-to-receptor research on a broad range of chemical and microbial contaminants including pharmaceuticals, personal care products, pathogens, antibiotic resistant genes, and natural toxins.

USGS scientists collecting a water sample from a well at the USGS Bemidji Research Site

Crude Oil Contamination in the Shallow Subsurface

This investigation focuses on the long-term persistence in soils and groundwater of petroleum hydrocarbon spills, including crude oil and refined petroleum fuels.

USGS scientist lifting a sample bottle from ice hole

Fate and Effects of Wastes from Unconventional Oil and Gas Development

Photos from a study that's assessing the environmental health risks associated with wastes from unconventional oil and gas development.

USGS scientists collecting gas samples from the unsaturated zone

Low-Level Radioactive and Mixed- Hazardous Wastes

Photo and images of the USGS's research actives at the Amargosa Desert Research Site, Nevada.

Power plan smoke stack

Mercury in Aquatic Ecosystems

This investigation focuses on understanding mercury sources, pathways and key processes in the environment, with particular emphasis on mercury methylation and accumulation in aquatic ecosystems.

USGS scientist collecting a water-quality sample from Zollner Creek, Oregon

Pesticide Contamination and Environmental Exposure

A gallery of photos on studies on the fate of pesticides, and assessing their environmental exposure and potential effects on fish, wildlife, and human health.

White tanks used to hold the tracer injection solutions with tubing going to injection wells

Sewage-Contaminated Ground Water

The USGS is investigating a wastewater plume in a shallow aquifer near Cape Cod, Massachusetts, to increase the understanding of the physical, chemical, and microbiological processes that affect the fate and transport of contaminants in groundwater.

View of Cement Creek, a mining impacted stream in Colorado

Watershed Contamination from Metal and Uranium Mining

Photos from an investigation on the effects of hard-rock metal mining and uranium mining on watersheds and ecosystems.

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Page Last Modified: 18-Jul-2016 @ 02:57:31 PM EDT