Water ATMs: Prepaid Dispensers in Nairobi's Informal Settlements
Nairobi City Water and Sewerage Company, the county-owned utility, put prepaid water dispensers — locally called water ATMs — into informal settlements from 2015. A resident loads a smart card or token at a kiosk or by mobile money, taps the machine and draws metered water straight from the utility network, bypassing the vendors and cartels who resell piped water at a markup. The first four went into Mathare Mashimoni with Grundfos Lifelink, a Danish manufacturer; the utility said in 2018 it intended to roll out 12,000. A separate donor-funded strand installed 16 token dispensers in Korogocho and Kahawa Soweto from November 2015. The machines are run under contract by community youth and women's self-help groups, not by utility staff. What the mechanism did not solve was supply. Peer-reviewed fieldwork in Mathare found the dispensers few and clustered along the main road while homes sat in the valleys below, and their tanks frequently empty: cartels cut the pipes to manufacture shortages and siphoned the dispensers' own tanks, and utility staff conceded in interviews that the machines ran dry. Residents kept buying from vendors, because the cheapest water in the settlement was also the least dependable.
📊 Impact
At launch the dispensers sold water at about KSh 0.50 per 20-litre jerrycan, under US$0.01 (NCWSC, quoted in The Source, 2018). Peer-reviewed fieldwork in Mathare found informal vendors charging "from Ksh2 (US$0.02) to Ksh50 (US$0.50) per 20 litres depending on where the clients lived" (Water International 45(5), 2020) — on those two figures a gap of roughly four to a hundred times, where a dispenser was working. Against that, delivery: four dispensers in the Mathare pilot against a stated intention of 12,000, plus 16 token dispensers in Korogocho and Kahawa Soweto from November 2015. A June 2026 expert commentary in The Star puts the present total at 257 across Mukuru kwa Reuben, Mathare, Kiambiu and Githogoro at a regulated social tariff of KSh 2 per 20 litres; that article returned 403 to every attempt and the utility publishes no count of its own. Every litre passing a dispenser is metered and billed, but no consumption or revenue figures are published, and the utility's own public FAQ does not mention the programme at all.
🎓 Lesson
A prepaid meter can fix the price of water without fixing the supply of it. The dispensers charged what they promised and then stood empty, because the cartels they were built to displace controlled the pipes feeding them.
Sources
📎 Cite this project
1001 Smart Cities (2026). “Water ATMs: Prepaid Dispensers in Nairobi's Informal Settlements” — Nairobi, Kenya. The Smart City Atlas. https://1001smartcities.org/projects/nairobi-water-atms/ (last verified 2026-07-26). Data: CC BY 4.0.
The underlying data is free to reuse with attribution — see the open data page.
🔗 Related projects
→ Open this project in the interactive atlas · → 📡 Data & IoT category · 🚩 Report an error