In most parts of the world, underground water is not drinkable directly.
Long ago, people simply used to draw up water from wells and drink it.
But now, you have to use filters to purify the water and make it drinkable.
It is just one of the many problems and hazards of E-Waste.
The electronic devices, dead cells, and batteries you throw away
with other garbage contain lead that easily mixes with underground water,
making it unfit for direct consumption.
That is just the tip of the Iceberg, have a look at our landfills there is no
more space and all waste does is contribute to nothing but pollution.