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2024 WATER OPERATOR CLASS 3-PRACTICE TEST EXAM QUESTIONS WITH CORRECT ANSWERS $13.99   Add to cart

Exam (elaborations)

2024 WATER OPERATOR CLASS 3-PRACTICE TEST EXAM QUESTIONS WITH CORRECT ANSWERS

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  • Course
  • WATER OPERATOR CLASS 3
  • Institution
  • WATER OPERATOR CLASS 3

2024 WATER OPERATOR CLASS 3-PRACTICE TEST EXAM QUESTIONS WITH CORRECT ANSWERS

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  • September 9, 2024
  • 10
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • mcl for tthms
  • water leaving ze
  • WATER OPERATOR CLASS 3
  • WATER OPERATOR CLASS 3
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Elitaa
2024 WATER OPERATOR CLASS 3-
PRACTICE TEST EXAM QUESTIONS
WITH CORRECT ANSWERS



Two ways to aid in backwashing a rapid sand filter are: - CORRECT-
ANSWERSMechanical surface wash and air wash.

Activated carbon works on the principal of: - CORRECT-ANSWERSAdsorption

Turbidity and GWUDISW rules and regulations fall under the: - CORRECT-
ANSWERSSurface Water Treatment Rule

The MCL for turbidity is: - CORRECT-ANSWERS.3 NTU's or lower 95% of the
time

Rapid sand filters remove: - CORRECT-ANSWERSParticles

Calcium carbonate for corrosion should be applied: - CORRECT-ANSWERSJust
after the filter

If a gas chlorine cylinder is leaking, it will leak slower if it leaks: - CORRECT-
ANSWERSGas

An instrument used to detect a breakdown in the internal windings of an
electric motor. - CORRECT-ANSWERSMegger

Tubes are sometimes located in the: - CORRECT-ANSWERSSettling basin

To reduce the size of the floc, you sould: - CORRECT-ANSWERSSpeed up the
flocculator

If you notice fly larvae (blood worms) in your water supply, what is the first
thing you should start looking at as the problem? - CORRECT-ANSWERSThe
condition of the screens on your vents and overflows

A ladder should extend how far above the structure that it accesses? -
CORRECT-ANSWERS3 ft

Any chemical you place into your water must have this approval: - CORRECT-
ANSWERSANSI/NSF 60 approval

, Any discharge from your water plant should be permitted by: - CORRECT-
ANSWERSLDEQ

Polymer is short for: - CORRECT-ANSWERSPolyelectrolytes

The first step you should take when working on a pump is: - CORRECT-
ANSWERSLock out tag out

A rotten egg odor in water indicates what? - CORRECT-ANSWERSHydrogen
sulfide

What is the desired amount of fluoride in water? - CORRECT-ANSWERS1 ppm

Sodium Fluoride and Hydrofluosilicic acid are two chemicals us to do what? -
CORRECT-ANSWERSFluoridate water

What is alum and ferric chloride used for? - CORRECT-ANSWERSCoagulants

How high should a well casing extend above ground level? - CORRECT-
ANSWERS12 inches

How high should a vent extend above ground level? - CORRECT-ANSWERS24
inches

The secondary standard for pH in potable water is: - CORRECT-ANSWERS6.5 -
8.5


MCL for TTHM's - CORRECT-ANSWERS0.08 ppm

MCL for HAA5's - CORRECT-ANSWERS0.06 ppm

MCL for Arsenic - CORRECT-ANSWERS0.01 ppm

MCL for Lead - CORRECT-ANSWERS0.015 ppm

Turbidity meter must be calibrated every: - CORRECT-ANSWERS90 days

MCL for turbidity is - CORRECT-ANSWERSLess than 0.3 for 95% of the time.

pH meters must be calibrated using - CORRECT-ANSWERS2 buffers

A grassy of fishy taste in reservoir water indicates - CORRECT-
ANSWERSAlgae blooms

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