Question 5033 of 236 · California Water Treatment Operator Exam
Under the surface water rules, a system with a filter effluent turbidity over 1 NTU must
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Correct answer to question 5033
- B: tell the State by the end of the next business day
Explanation
For conventional and direct filtration, filtered water turbidity may at no time exceed 1 NTU (40 CFR 141.173(a)(2)). The system must inform the State as soon as possible, and no later than the end of the next business day (40 CFR 141.175(a)).
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