Recently Cape Town was to become the first major city to run out of water. I did what most Capetonians did at the time, I purchased a rainwater tank. It worked well and helped reduce the need for tap water. I had just moved water to the "Edge" (our house) but all the problems of managing water is now mine! That lead me to wonder, how do I know this water is safe and won't harm us?

This session is about how to use IoT Central and a few hobbyist components to monitor the water conditions in the garden rain water tank, quickly, easily and best of all for free.

This solution was for my own personal family use, what could we use this technology to do for the rest of society?