Question 1021 of 236 · California Water Treatment Operator Exam
Copper sulfate is sometimes applied to reservoirs to control algae and adds copper to the water. What is the California secondary MCL for copper?
Exactly one answer is correct.
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Correct answer to question 1021
- C: 1.0 mg/L
Explanation
The secondary MCL for copper is 1.0 mg/L (22 CCR 64449, Table 64449-A), an aesthetic limit. It is separate from the federal lead and copper action level of 1.3 mg/L. Copper sulfate dosing must keep copper below this level.
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