Expanding CityTaps’ Impact
Developing an IoT-Based Non-Revenue Water Solution
4 min read
Executive Summary
As the driver of innovation at CityTaps, I led the development of an IoT-based solution that transformed how African utilities manage water losses, creating a new revenue stream while delivering measurable impact. Key achievements include:
Reduced water losses from 70% to 40% in pilot areas through predictive analytics
Generated €100k annual revenue per site with 4-year ROI
Secured expansion funding and attracted interest from 20+ utilities
Built partnerships with international water experts to automate complex calculations
Created a replicable model approved by the Tanzanian Ministry of Water
The project showcases my ability to identify market opportunities, develop data-driven solutions, and drive adoption in challenging environments.




Introduction
In 2021, CityTaps faced a pivotal challenge: while its cash collection solution was innovative, scaling it fast enough to ensure growth was a challenge. We identified Non-Revenue Water (NRW) as a strategic opportunity to expand our impact. The scale of the problem was massive - utilities in Africa lose up to 50% of water supply due to leaks, theft, and inefficiencies, representing billions in annual losses. The potential impact was equally significant - reducing NRW by just 10% in Kenya alone could provide clean water to 2 million additional people. This combination of business opportunity and social impact made NRW the perfect focus for our next innovation.
Objective
The project aimed to:
Open New Revenue Streams: Address NRW challenges faced by utilities globally.
Build a Market Entry Point: Introduce CityTaps’ cash collection solution through an integrated product suite.
Align with Donor Funding: Leverage international support for pilot funding and scaling.
Conclusion
The CityTaps NRW project demonstrates my ability to deliver impactful digital solutions in challenging environments. By combining user-centric design, technical expertise, and strategic collaboration, I reduced water losses, improved utility operations, and positioned CityTaps for scalable growth. This project highlights my capacity to lead digital initiatives that solve complex problems, drive adoption, and create measurable business impact.
Target Audience
CityTaps targeted:
Water Utilities: Struggling with inefficiencies and limited resources to monitor and address NRW.
Underserved Communities: Benefiting indirectly from improved utility performance and water availability.
Process: Comprehensive Leadership from Concept to Pilot
The development of the IoT solution followed a structured, user-centric process:
Customer Discovery
Conducted field research in Kenya, meeting with utilities to understand pain points.
Identified a preference for actionable insights and simplicity over complex feature sets.
Shared design mock-ups to gather feedback and refine the platform design.
Collaboration with NRW Experts
Partnered with an International Water Association expert to develop methodologies for automated NRW calculations.
Translated manual processes into algorithms, enabling real-time monitoring and reporting.
Platform Development and Data Analytics
Designed an intuitive platform with three core features:
Network Overview: A SCADA-style schematic displaying all alerts.
Live Monitoring: Real-time flow and pressure data visualization.
Analysis Dashboard: Automated NRW tracking and reporting.
Collaborated with the data engineer to investigate advanced predictive modeling opportunities for water infrastructure maintenance, working through complex data challenges:
Partnered closely with data and software team to analyze dataset limitations
Assisted in identifying critical data collection and quality constraints
Supported systematic evaluation of predictive modeling feasibility
Gained hands-on experience with the complexities of transforming raw data into actionable insights
Developed real-time data modeling techniques to mitigate the impact of communication disruptions from IoT sensors, ensuring uninterrupted insights for utilities. These models filtered inaccurate readings, extrapolated missing data, and maintained data reliability in challenging field conditions.
Implementation Strategy
Launched a pilot with a small utility in Tanzania, funded by an international donor, while refining the platform based on real-time feedback.
Key Challenges and Solutions
Data Reliability & Analytics
Challenge: Unreliable sensor data threatened platform credibility
Solution: Developed targeted filtering algorithms and collaborated with data engineers to create a robust validation mechanism
Result: Successfully reduced NRW from 70% to 40%, saving 236,000 m³ of water annually worth 100k€
Stakeholder Adoption & Scale
Challenge: Cultural resistance from utility staff and limited face-to-face interaction opportunities
Solution: Built trust through demonstrations and iterative feedback loops with sales team
Result: Secured approval from Tanzanian Ministry of Water and attracted interest from 20+ utilities
Impact & Success Factors
User-Centric Innovation
Focused on utilities' unique constraints, resulting in rapid adoption
Created a replicable model that secured funding for expansion to Kenya
Enabled real-time monitoring and intervention validation, transforming manual processes into automated insights
Strategic Growth
Positioned CityTaps as a regional leader in water management
Created new revenue streams through an integrated product suite
Established demonstration site attracting interest from over 20 utilities
Projected ROI of approximately 4 years based on pilot results







