Weatherproof Communal Tap Water Sensor (2023 Spring)
The Challenge
Many rural Nepalese communities rely on water sources contaminated with E. coli, yet they often lack awareness of the danger or the tools to test it. Previous prototypes were designed for laboratories and were too complicated and fragile for shared use at a village tap.
Our Solution
Students redesigned the existing system into a weatherproof communal public tap water sensor. This durable device is installed directly onto village taps and provides immediate “Safe/Unsafe” feedback through easy-to-understand icons and color-coded LED lights.
How It Works
In rural areas, women are primarily responsible for collecting water and benefit most from user-friendly solutions. The device uses a durable stainless steel casing and an automated self-cleaning system that flushes the internal testing unit with isopropanol every 100 tests.
The Outcome
This project makes water testing a public, shared activity, which fosters community trust and encourages safer hygiene habits. It provides an accessible way to prevent waterborne diseases without requiring expert training.