Question 1016 of 229 · California Water Distribution Operator Exam
A well is most likely to need disinfection in which situation?
Exactly one answer is correct.
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Correct answer to question 1016
- B: After a pump is pulled for repair or the well is newly constructed
Explanation
Pulling the pump or drilling brings surface contamination into the well, so it must be disinfected before use. AWWA C654 governs this work.
More questions: Disinfection
- 1017Which of the following is a common source of contamination of a water storage reservoir?
- 1018Chlorine gas is heavier than air. Where should an operator expect leaking gas to collect?
- 1019At which pH is free chlorine the most effective disinfectant?
- 1020Which form of free chlorine is the stronger disinfectant?
- 1021What chlorine to ammonia-nitrogen ratio, by weight, is typically targeted when making chloramines?
- 1022Which is an advantage of using chloramines instead of free chlorine in a distribution system?