National Water-Quality Assessment (NAWQA) Project
Written primarily for public and private decision-makers, NAWQA summary reports discuss water quality in terms of status, trends, natural and human factors, and implications for management and decision making. The consistent, multi-scale approach used in all assessments helps to determine if certain types of water-quality issues are isolated or pervasive, and allows direct comparisons of how human activities, land use, and natural factors affect water quality and ecological health in the Nation's diverse geographic and environmental settings. Water-quality conditions are compared to national water-quality statistics as well as considered against national water-quality standards and guidelines related to drinking water, protection of aquatic life, and nutrient enrichment.
View all NAWQA Publications
|The Quality of Our Nation's Waters||Individual river basin and aquifer ("Study Unit") assessments|
Volatile Organic Compounds in the Nation's Ground Water and Drinking-Water Supply Wells (USGS Circular 1292) (2006)
Pesticides in the Nation's Streams and Ground Water, 1992-2001 (USGS Circular 1291) (2006)