An eco friendly cleansing font at a shrine

Japan's cleansing fonts at shrines are indeed beautiful, but perhaps not particularly ecological. Most of them, when turned on, have a continuous flow of water, even if most often it is more a trickle than a flow. It still wastes water. I doubt they recycle the water considering people wash their hands and rinse their mouths with the water for the ritual cleansing practice known as 'temizu'.

I really don't know much about the water source and volumes used by the water fonts / basins known as (among other things) 'Chōzubachi' in Japanese. But last month I saw an unique 'chozubachi' with a more eco-friendly water font I want to share. The water font at Tamashiki Shrine in Kazo city operates on a sensor, much like the taps in public sinks in recent years. Only by moving your hand in front of the sensor will water come out of the spout.

If I've seen / used another water font / basin at a shrine that operates on a sensor I can't recall it! And I'm pretty sure the last time I was at Tamashiki shrine they didn't have the red spouts you can see in the photo above. Actually I think they last time I visited they had the water turned off altogether and disinfectant spray out instead. 

Have you seen a purifying water font / basin like this at a shrine before?