Every five years teams supporting U.S. Environmental Protection Agency’s National Aquatic Resource Survey—consisting of tribal, state, and federal partners—collect samples from over 2000 river and stream reaches throughout the United States. CSS analytical chemists support this effort by processing the samples and then analyzing them for various chemicals to help characterize their water quality.  The data are available at the U.S. EPA National Aquatic Resource Survey website where more information is provided on this program.

See More CSS Insights

Woman pours works with chemical with a test kit

Supporting Guam’s Chemical Round Up

Senior chemist working on the CSS contract with the Environmental Protection Agency’s (EPA) Superfund Technical Assessment and Response Team (START) supported the Guam Lab Chemicals Round Up in March of 2024 and July of 2025. During both mobilizations, START supported EPA’s mission to collect chemical waste items from across the U.S. island territory of Guam for off-island transport and disposal. As a field chemist, CSS employee…

Overcoming COVID-19 Challenges

Great job to our team supporting our contract with the U.S. General Services Administration on assisting the client with conducting a year’s worth of environmental, health, and safety surveys in just six months! Due to limitations with COVID-19, the team was unable to conduct their surveys on their usual timeline and instead had to work…

satellite photo of the destruction path of a tornado

Providing Data Products for More Effective Consumption 

The National Oceanic and Atmospheric Administration’s (NOAA) National Centers for Environmental Information (NCEI) is responsible for providing data, products, and services that help businesses and organizations operate more efficiently and effectively. As such, these data and products need to be available in a publicly accessible and digestible format the audience are able to understand.   To…