USGS GWAVA Nitrate Contamination Model
Ground-Water Vulnerability Assessment model predicting nitrate contamination risk in US groundwater. GWAVA-S for shallow groundwater (<5m) and GWAVA-DW for deeper drinking water supplies, with downloadable GIS data layers
water.usgs.gov
At a glance
- Region
- United States (North America)
- Coverage
- United States nationwide: shallow and deep groundwater
- Access
- Free
- Category
- Government
- Last updated
- 2024
What's inside
- Nitrate Contamination
- Groundwater Vulnerability
- Risk Assessment
- GIS Data Layers
What you can do with it
Typical work that data of this type supports.
- 01
Trend hotspots
Find where water tables are falling year after year.
Because it has: Groundwater Vulnerability
- 02
Recharge planning
Site recharge structures and new borewells with evidence.
- 03
Hotspots and trends
Find where contamination is high and whether it is getting worse.
Because it has: Nitrate Contamination
Where AI adds value
Ideas for machine learning and AI agents built on this kind of data.
- 01
Gap filling
Rebuild missing well readings from neighbours, rainfall and season.
- 02
Level forecasts
Forecast pre- and post-monsoon levels well by well.
- 03
Risk maps
Predict contamination where no samples exist, from geology, land use and climate.
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- EPA UCMR 5 PFAS Drinking Water DataNorth America | Free
- EWG Tap Water Database (2025 Edition)North America | Free
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