Class C Water Operator License Exam: Questions & Answers: Latest Updated A+ Guide Solution

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Ammonia mixed with chlorine gas creates a (Ans- white smoke The most difficult part of a water distribution operator's job. (Ans- furnish a continuous supply Physical connection between a sa... fe and potentially unsafe water source. (Ans- cross connection A distribution system is a (Ans- looped system Dead end mains should be flushed (Ans- every month Excess nitrate causes a condition called (Ans- blue baby syndrome Water hardness is caused by (Ans- calcium and magnesium Sewer mains should be __ft away from water mains. (Ans- 9 Water with a pH less than 7 is considered to be (Ans- acidic Bacti records are kept for ____yrs and chemical records are kept for ___yrs. (Ans- 5, 10 Bacti samples have to be returned to the lab within ___hrs of the collection time. (Ans- 30 Color in the water supply should be less than _____ units. (Ans- 15 Chlorine is ______ times heavier than air. (Ans- 2.5 90% of underground pi [Show More]

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