Question 5020 of 236 · California Water Treatment Operator Exam

Records of bacteriological and chemical analyses must be kept by public water systems for

Exactly one answer is correct.

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Correct answer to question 5020

  • A: at least 5 years for bacteriological results and 10 years for chemical results

Explanation

Federal rules require microbiological and turbidity records to be kept at least 5 years and chemical analyses at least 10 years. California 22 CCR 64470(b)(1) states the same periods.

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