Class C Water Operator License Exam with Complete Solutions 2023/2024 Graded A+

Ammonia mixed with chlorine gas creates a - Correct Answer white smoke The most difficult part of a water distribution operator's job. - Correct Answer furnish a continuous supply Physical connection between a safe and potentially unsafe water source. - Correct Answer cross connection A distribution system is a - Correct Answer looped system Dead end mains should be flushed - Correct Answer every month Excess nitrate causes a condition called - Correct Answer blue baby syndrome Water hardness is caused by - Correct Answer calcium and magnesium Sewer mains should be __ft away from water mains. - Correct Answer 9 Water with a pH less than 7 is considered to be - Correct Answer acidic Bacti records are kept for ____yrs and chemical records are kept for ___yrs. - Correct Answer 5, 10 Bacti samples have to be returned to the lab within ___hrs of the collection time. - Correct Answer 30 Color in the water supply should be less than _____ units. - Correct Answer 15 Chlorine is ______ times heavier than air. - Correct Answer 2.5 90% of underground pipe failures are related to improper - Correct Answer backfill and bedding The spoil bank should be located at least ___ft away from the ditch. - Correct Answer 2 The following minimum residuals is ______mg/L for free chlorine and ____mg/L for total chlorine. - Correct Answer .2, .5 Public opinion of the water utility is _______ at a standstill. - Correct Answer never