National Water-Quality Assessment (NAWQA) Project

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Featured Studies
Special studies on source-water and drinking-water quality
Surface-water intakes
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Groundwater-Quality Trends

Home National Results and Maps Background Factors Affecting Trends Simulation and Forecasting Data Trends Publications


NAWQA Groundwater-Quality data can be obtained from two sources:


  1. The NAWQA Groundwater-Quality Status Mapper allows you to interactively map concentrations of all groundwater-quality constituents sampled by NAWQA since 1991. The data points presented on the map are generated directly from the 17 million water-quality results stored in the NAWQA data warehouse.

  2. The NAWQA Data Warehouse stores all chemical concentrations found in water, bed sediment, and aquatic organism tissues for about 2,400 chemical constituents. The NAWQA Data Warehouse also contains data on site, basin, well and network characteristics, daily stream flow information for fixed sampling sites, and ground water levels for sampled wells. You can make an interactive data retrieval that meets your particular needs.

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