Question 4003 of 229 · California Water Distribution Operator Exam
How do primary and secondary MCLs differ?
Exactly one answer is correct.
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Correct answer to question 4003
- B: Primary MCLs protect health and are enforceable; secondary MCLs address aesthetics
Explanation
Primary standards are health-based, for example nitrate or arsenic. Secondary standards such as iron and manganese are aesthetic, though California enforces its own secondary MCLs.
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