Question 1028 of 223 · California Water Treatment Operator Exam

Alkalinity in natural water is mainly caused by

Exactly one answer is correct.

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Correct answer to question 1028

  • A: bicarbonate, carbonate and hydroxide ions

Explanation

Alkalinity is the water's capacity to neutralize acid, mostly from bicarbonate and carbonate. It buffers pH changes during coagulation.

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