Water quality contamination events — whether from industrial spills, sewage overflow, or pathogenic blooms — cause massive public health harm because water systems lack the capacity to detect and respond in real time. Even in wealthy nations with mature water infrastructure, contamination is often detected only after the fact through illness reports.

In lower-income countries, the gap between technology availability and deployment is even wider: real-time monitoring systems are installed but data is not interpreted, alarms are not triggered, and responses do not occur. The result is a surveillance system that is technically blind despite the existence of capable technology.