Class C Water Operator License Exam | Questions and Correct Answers | Latest Update 2024/2025 | Graded A+

Class C Water Operator License Exam | Questions and Correct Answers | Latest Update 2024/2025 | Graded A+ Ammonia mixed with chlorine gas creates a - Answer -white smoke The most difficult part of a water distribution operator's job. - Answer - furnish a continuous supply Physical connection between a safe and potentially unsafe water source. - Answer -cross connection A distribution system is a - Answer -looped system Dead end mains should be flushed - Answer -every month Excess nitrate causes a condition called - Answer -blue baby syndrome Water hardness is caused by - Answer -calcium and magnesium Sewer mains should be __ft away from water mains. - Answer -9 Water with a pH less than 7 is considered to be - Answer -acidic Bacti records are kept for ____yrs and chemical records are kept for ___yrs. - Answer -5, 10Bacti samples have to be returned to the lab within ___hrs of the collection time. - Answer -30 Color in the water supply should be less than _____ units. - Answer -15 Chlorine is ______ times heavier than air. - Answer -2.5 90% of underground pipe failures are related to improper - Answer - backfill and bedding The spoil bank should be located at least ___ft away from the ditch. - Answer -2