Question

Give one reason why there is less bacteria and particle pollution in ground water than water from surface sources such as lakes and rivers.

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Answer 1

Answer:

For the Nation as a whole, the chemical and biological character of ground water is acceptable for most uses. Ground water is less susceptible to bacterial pollution than surface water because the soil and rocks through which ground water flows screen out most of the bacteria.

Answer 2

Answer:

because all bacteria and particles are filtered by sand and rocks

so gound water is pure and filtered water