MajiMap
A public water data platform mapping pricing, quality, and access across Nairobi.
Every drinking-water tap, well, kiosk, and spring that OpenStreetMap knows about in Nairobi, plus our own field research on pricing. Data is pulled live from open sources and updates itself — nothing is hand-curated.
"Why does water cost 10x more in Kibera than in Karen?"
MajiMap answers this question with data. Our flagship public water transparency tool.
Water Pricing
- Average price per litre by estate
- Vendor vs. utility vs. bottled vs. MiMaji
- Price inequality index across income levels
- Historical price trends
Water Quality
- TDS readings from foundation testing events
- Bacteriological results where available
- Quality rating: Safe, Caution, Unsafe
- Source type: borehole, piped, vendor, rainwater
Access & Coverage
- Coverage gaps with no reliable clean water
- Vendor and access point locations
- Distance to nearest clean water source
- Time-to-water estimates for residents
MiMaji Integration
- MiMaji delivery coverage zones
- Verified vendor locations
- Real-time pricing from platform data
- One-tap order for covered areas
For Donors
Baseline data and measurable outcomes that institutional funders require.
For Advocacy
Public data makes water inequality impossible to ignore for utilities and governments.
For Communities
Residents see the price gap, find better alternatives, and switch to verified MiMaji water.
For Media
The kind of data-driven inequality story Nation Africa, The Guardian, and Al Jazeera publish.
Static Data Visualisation
Nairobi Water Price Map research turned into a colour-coded interactive visualisation with shareable assets.
Water Quality Data Layer
Community testing events. TDS and bacteriological data with quality ratings added to the map.
Interactive Platform
Searchable map interface. Community submissions. MiMaji platform vendor data integration.
Regional Expansion
Kampala, Dar es Salaam, Addis Ababa, Kigali, Bujumbura, and Mogadishu.
Estate Price Surveys
Our field team visits Nairobi estates in person to log the real cost of water at kiosks, from boda boda vendors, handcart refills, and informal taps. Every price point is geotagged, timestamped, and traceable.
Quality Testing
On the same visits we sample water with TDS meters and basic microbiological kits, so price and quality sit on the same map. Safe, caution, or unsafe, per source.
Community Reports
Residents, boda riders, and vendors can submit their own prices and quality observations. We verify, then publish. The more data, the sharper the picture.
Open Layers
We also fuse public datasets from OpenStreetMap and the Water Point Data Exchange so the map never starts from zero.
Support our estate surveys
Every estate visit costs real time and real shillings. If you believe Nairobi deserves public, honest water data, support our work or reach out directly.
Running a business, an estate, or a school and want price advice? Talk to us on WhatsApp or get in touch. We share what we learn.
MajiMap needs data partners, funding, and community contributors. Researchers, donors, and local residents all shape the map.