Respuesta :
There are many ways groundwater can be polluted. Such as,
Naturally-occurring (geogenic),
On-site sanitation systems,
Sewage and sewage sludge,
Fertilizers and pesticides,
Commercial and industrial leaks,
Hydraulic fracturing,
Landfill leachate,
Etc.
Groundwater pollution can happen when man-made products like gasoline, oil, road salts, and chemicals get into the groundwater