Question 5036 of 236 · California Water Treatment Operator Exam
In a conventional filtration plant, the filtration process is credited with what Giardia removal under the Surface Water Treatment Rule?
Exactly one answer is correct.
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Correct answer to question 5036
- A: 2.5-log
Explanation
Conventional filtration receives 2.5-log Giardia and 2-log virus credit. California requires 3-log Giardia and 4-log virus overall (22 CCR 64652(a)), so disinfection must supply the remaining 0.5-log Giardia and 2-log virus. Direct filtration receives 2.0-log Giardia credit.
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