In Cape Town, water issues often take long to fix because the city relies on residents to report faults. Unreported leaks waste water, lower system pressure, and lead to poor service delivery.. In order to solve these challenges, OCL worked closely with the Water and Sanitation team to co-create an algorithmic tool that uses pressure and flow data to spot faults in the water system early, before residents even report them. This helps to reduce water loss and improve services in the long term, especially in areas that have been previously underserved.