Open Water Toolkit Map
Tap a country — see which open-source water-treatment techniques fit local conditions, drawn from a 24-technique open catalog and live indicators (WHO/UNICEF JMP, FAO water stress, GDACS disasters).
Tap any country to see recommended techniques. Pinch / scroll to zoom.
Worst by indicator
Top 12 countries on the active indicator. Click a row to fly there and see techniques.
Live water disasters
Floods, droughts, and tropical cyclones from GDACS (UN OCHA + JRC). Click any event for recommended actions. Recent (<7 d) events are highlighted on the map.
Loading current disasters…
Your pins 0
Saved only in your browser (localStorage). Nothing is uploaded. Export to back up or share by file.
Browse the open technique catalog (24 techniques)
Each technique is community- or household-scale and pairs with at least one freely accessible reference (CAWST, Eawag/Sandec, SSWM, WHO, EPA, IRC…). Click any card for details.
How this portal works
- Country shading shows live data fetched per visit:
- Drinking-water access gap — WHO/UNICEF JMP via Our World in Data.
- Freshwater-withdrawal stress — FAO AQUASTAT (UN SDG 6.4.2) via Our World in Data.
- Click anywhere to see techniques. The recommender derives need signals (drinking-water gap, water stress, disaster proximity, climate band) and ranks the catalog by use-case match plus simplicity.
- Live disasters are pulled directly from GDACS (UN OCHA + JRC) each visit. The popup ranks the techniques most likely to be useful for that disaster type. Use the time-window chips to focus on the last 7 / 30 / 90 days; recent (<7 d) markers render larger.
- Drinking-water taps (OSM) is an opt-in layer. Toggle it on (or click Reload taps in view) to query OpenStreetMap for public taps in the current map view via Overpass. Cached in your browser for 24 h. Click any tap to save it as one of your pins.
- Your pins live in your browser’s localStorage. Use Export JSON to back them up or share with someone you trust.
- No accounts. No tracking. No upload. Outbound calls: OpenFreeMap (basemap), Our World in Data (indicator CSVs), GDACS (disaster list), OpenStreetMap Overpass (taps, only if you opt in).
Sources: country borders — Natural Earth (public domain); basemap — OpenFreeMap & OpenStreetMap contributors (ODbL); drinking-water access — WHO/UNICEF JMP (CC BY 4.0) via Our World in Data; water stress — FAO AQUASTAT / UN-Water SDG 6.4.2 (CC BY 4.0) via Our World in Data; live disasters — GDACS (UN OCHA + JRC); public drinking-water taps — OpenStreetMap contributors via the Overpass API (ODbL); rendering — MapLibre GL JS (BSD-3); technique catalog assembled from open-access references including CAWST, Eawag/Sandec, SSWM, WHO, US EPA, IRC WASH.
National figures hide local realities. Switching to local crisis data requires sub-national surveys; for the United States, see the EPA ECHO Drinking Water Dashboard; for elsewhere, ask local authorities. See methodology.