Question 6022 of 229 · California Water Distribution Operator Exam
A customer reports a rotten-egg odor from the hot water tap only. What is a likely cause?
Exactly one answer is correct.
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Correct answer to question 6022
- C: Sulfate-reducing bacteria reacting with the water heater anode
Explanation
Hydrogen sulfide from bacteria in the water heater gives the odor. Odor in only the hot water points to the heater.
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