This will be necessary in the European Union in the next decade as well. even though we have lots of dams that hold the rivers, the biggest rivers eventually will run dry due to climate change, depleting the groundwater recources used until now. Storing rain water surely is a technology that will get more important everywhere as time passes in this changing world.
As a first responder to two major floods in Italy I appreciate when prevention is done: only prevention makes for resilient communities! Seeing it being built with available resources in different scales and different budgets is very satisfying! Good job both for the people who built them and for the video itself! I wonder how you deal with mosquitoes in systems that are open ponds. Are underground systems based on pits with pond lining filled with coarse gravel also being tested? Those should be more resilient against mosquitoes. I agree with @lewdards1127 comment: you deserve more subscribers.
I would like to learn about capturing water and share it with the world, but I don't want to push the climate change propaganda. I will have to give any video a thumbs down until people that an opposing view on climate change are given equal air time.
