Excellent! Sounds like a very good plan. And there’s opportunity to spread the idea to others in the village.
We humans have been pretty foolish about how we set up systems for our most basic necessities. When the rain falls, we allow it to run off the land into sewers, streams and rivers carrying away valuable topsoil and nutrients. It’s then collected, treated and pressurized so that it can be sent right back to the place it first fell to the earth in its purest form. So much energy wasted only to get an inferior product in the end.
Yeah. If I had any kind of background in the construction arts or engineering I'd start a rain-water catchment installation and consulting firm there and die a bazillionaire.