Groundwater Assessment Platform (GAP Maps)
Eawag global groundwater quality platform for viewing, printing, uploading, sharing, and spatially modeling geogenic groundwater contamination including arsenic, fluoride, and other contaminants with free GIS tools
gapmaps.org
At a glance
- Region
- Global
- Coverage
- Global groundwater quality maps and modeling platform
- Access
- Free
- Category
- Research Institute
- Last updated
- 2025
What's inside
- Arsenic Contamination
- Fluoride Contamination
- Groundwater Quality
- Geogenic Contamination Maps
- Spatial Modeling
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: Arsenic Contamination
- 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.
Related water data
- Eawag Global Arsenic in Groundwater DatasetGlobal | Free
- CGWB India Groundwater Quality PortalSouth Asia | Free
- UNESCO IHP-WINS Global Groundwater QualityGlobal | Free
- BGS Bangladesh Arsenic Groundwater DataSouth Asia | Free
- Copernicus Lake Water Quality NRT v2 (100m)Global | Free
- Dartmouth Flood ObservatoryGlobal | Free
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