The dangers outlined above in all surface water supplies may perhaps cause some to think that after all, the fine, sweet waters of the shallow wells dug in our grandfather's day or the deep driven wells of more recent times, may afford a pure and wholesome supply. | The dangers outlined above in all surface water supplies may perhaps cause some to think that after all, the fine, sweet waters of the shallow wells dug in our grandfather's day or the deep driven wells of more recent times, may afford a pure and wholesome supply. |