NWQP Water-Quality Topics
Curious About Water-Quality Science?
Learn more about these topics and how they relate to groundwater quality and surface-water quality and ecology
Science Center Objects
From chloride to corrosivity, from pesticides to PAHs, find the most recent National Water Quality Program (NWQP) science on these topics and effects on surface water, groundwater, and ecology. Informative web pages provide an overview and links to related web pages, publications, maps, news, and data.
CONTAMINANTS IN WATER
Chloride and salinity
Emerging contaminants (including pharmaceuticals and hormones)
Polycyclic aromatic hydrocarbons (PAHs) and coal-tar sealant
Volatile organic compounds (VOCs), including MTBE
► Confused by some of the water-quality terms? Find the definitions and explanations you're looking for in the Water-Quality Glossary.