Nutrients in the nation's streams and groundwater: National findings and implications

Fact Sheet 2010-3078
By:  and 



A comprehensive national analysis of the distribution and trends of nutrient concentrations in streams and groundwater from 1992 through 2004 is provided by the National Water-Quality Assessment (NAWQA) Program of the United States Geological Survey (USGS). Findings describe the distribution and causes of varying nutrient concentrations in streams and groundwater throughout the Nation and examine the primary sources that contribute to elevated concentrations. Results show that excessive nutrient enrichment is a widespread cause of ecological degradation in streams and that nitrate contamination of groundwater used for drinking water, particularly shallow domestic wells in agricultural areas, is a continuing human-health concern. Finally, despite major Federal, State and local nonpoint-source nutrient control efforts for streams and watersheds across the Nation, USGS trend analyses for 1993?2003 suggest limited national progress to reduce the impacts of nonpoint sources of nutrients during this period. Instead, concentrations have remained the same or increased in many streams and aquifers across the Nation, and continue to pose risks to aquatic life and human health. This Fact Sheet highlights selected national findings and their implications, and serves as a companion product to the complete analysis reported in the USGS Circular titled ?The Quality of Our Nation?s Waters?Nutrients in the Nation?s Streams and Groundwater, 1992?2004.?

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title Nutrients in the nation's streams and groundwater: National findings and implications
Series title Fact Sheet
Series number 2010-3078
DOI 10.3133/fs20103078
Year Published 2010
Language English
Publisher U.S. Geological Survey
Contributing office(s) National Water Quality Assessment Program
Description 6 p.
Country United States
Additional Online Files (Y/N) N
Google Analytic Metrics Metrics page
Additional publication details