Artificial Aquifer

An idea for a completely sterile cistern that is ten or so feet under ground where no bacteria can grow, that may collect rain water as it seeps through the ground and into a silicone bowl that was filled with sterilized stones(with room between the stones for water to fill) and which was then covered with sterile pebbles and sterile sand. But this is an untested theory. Even though it may work very well, and maybe even last forever and be effective forever, as long as bacteria or mold didn't get into the cistern somehow. The scenario being, if bacteria got through the 10 or so feet of sand filtering, or as backwash through the connected water collection plumbing.
The stones would be sterilized with chlorine and then left to dry, and the deeply dug sand would be dug in layers and each layer dug into separate sterile piles with a newly cleaned shovel for each pile for most predictable sterilization levels.
And the water would be collected from the underground cistern through a pipe or straw or some other better and easier to install technology. This cistern would be located right next to the house for ease of collection instead of going to the store for jugs of water.
This would essentially try to copy the exact same function as modern aquifers, which are everywhere in Florida already. For a do it yourself way of getting limitless fresh water anywhere except in the coldest regions.
This idea may never be able to be improved upon for the cause of infinite, free, fresh drinking water. If the theory is someday proven correct, probably by me if nobody else tests it.
Also see wiki for artesian aquifer.