USGS NAWQA National Water-Quality Assessment Trace Elements
USGS National Water-Quality Assessment Project trace element data for U.S. rivers, streams, and aquifers. Long-term regional and national synthesis of arsenic, chromium, selenium, mercury, lead, uranium, and other metal concentrations with site-level records and time series accessible via Water Quality Portal and USGS data releases.
usgs.gov
At a glance
- Region
- United States (North America)
- Coverage
- National (CONUS)
- Access
- Free
- Category
- Government
What's inside
- Trace Elements
- Arsenic
- Chromium
- Water Quality
- Groundwater Quality
- Surface Water
What you can do with it
Typical work that data of this type supports.
- 01
Hotspots and trends
Find where contamination is high and whether it is getting worse.
Because it has: Trace Elements
- 02
Compliance checks
Compare samples against drinking water and discharge standards.
- 03
Trend hotspots
Find where water tables are falling year after year.
Because it has: Groundwater Quality
Where AI adds value
Ideas for machine learning and AI agents built on this kind of data.
- 01
Risk maps
Predict contamination where no samples exist, from geology, land use and climate.
- 02
Anomaly alerts
Catch sudden spikes in sensor or lab data automatically.
- 03
Gap filling
Rebuild missing well readings from neighbours, rainfall and season.
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