A certain motel chain may leave the light on for you as a matter of safety and comfort, but if anyone were to leave the faucet on for you, well, that would just be weird. While leaving the water running is not something that is done on purpose, it does happen all the time for a number of reasons. The elderly, those with memory impairments, and children can often forget to turn off a faucet after they are finished with it. For a typical faucet, this wastes two gallons of water per minute according to the US EPA. That can really add up on water bills and may even result in costly water damage from an overflowing sink.
This is a companion discussion topic for the original entry at https://www.edgeimpulse.com/blog/water-logged-detect-running-faucets-with-edge-ml-and-cellular-iot