With the aid of an IoT app, the Don't Flush Me project helps protect the inner-city waterways of New York from pollution. Additionally, it seeks to increase people's environmental awareness and bring about positive changes in behaviour.
Whenever sewer levels (measured by sensors) exceed a critical limit, the surrounding neighbourhood is immediately notified to ensure that they do not continue pumping waste into the system. Washing machines are stopped, toilets temporarily cease to flush, and the washing up is put off until water levels fall sufficiently and the all-clear is given. The warning signal is directly triggered through a network of sensors and can take the form of a light that shines in a particular colour.