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Water Plant Operator Certification Exam Prep - AWWA Questions And answers 2024/25
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Water Plant Operator Certification Exam Prep - AWWA Questions And answers 2024/25
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Water Plant Operator Certification ExamPrep - AWWA Questions And answers
2024/25
Spontaneous combustion can occur if activated carbon is mixed with... - Potassium II II II II II II II II II II II II II
permanganate
II
If chemical solutions gets on a person's skin, the area should be flushed
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_______________, and if the chemical dust are inhaled ______________________. -
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with large quantities of water, consult a physician immediately
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II Who esablishes MCLs? - State and federal regulations
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If a filter's turbidity exceeds _____ NTU in the first 4 hours of a given filter run for two
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consecutive _________samples, the results must be reported within ________days
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following the month of occurrence. - 0.5, 15 minute, 10
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Compliance for chlorite is based on the _________________of __________ monitoring
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locations each _______________. - average, 3, month
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What regulation specifies the percentage removal of TOC? - Stage 1 Disinfectants and
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By Products Rule
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What are the log requirements under Interim Enhanced Surface Water Treatment Rule
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for Giardia and Cryptosporidium? - 3 log and 2 log respectively
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Combined FE turbidity must be equal to .03 NTU for ______% of samples collected each
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month, and none of samples can be _______. - 95, >1
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II If Soda Ash gets into the eyes - Flush 15 minutes with warm water
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If variables and waivers are not granted, the Public Water System should sample every
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___________ years in regard to Phase I, II, V contaminants. - 3
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In order to comply with enhanced coagulation requirements, a softening plant would need
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to remove _________of _________________ hardness. - 10 mg/L ; magnesium
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Treatment plants must remove specific percentages of TOC based on their
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_____________________, ___________________ and _____________________
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levels under the enhanced coagulation requirements. - sourcewater, TOC, alkalinity
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The locational running annual average applies to what USEPA regulation? - Stage 2
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Disinfectants and Disinfection By Products Rule
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, Records need to be reported for any testing required for filter exemptions under... - The
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Interim Enhanced Surface Water Treatment Rule
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II Unit of Gamma Radiation - REM II II II II II II II
II The pump shaft's main function - to transmit torque from the motor to the impeller
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Packing replacement is done - when no further tightening can be done on the packing
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gland
II
II Packing rings should be staggered at - 90 degrees II II II II II II II II II II
II Packing is designed to - wear with normal use and deteriorate with normal use
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II When is chlorine dioxide stable? - in the absence of light and elevated temperatures
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Ultraviolet Treatment - requires a monitoring procedure other than monitoring to
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determine its efficiency
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II A disinfectant oxidant not affected by pH - chlorine dioxide
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Graded gravel below the sand in a media filter does what? - - supports the underdrain
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system
II
- supports the sand bed
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- prevents sand from entering the underdrain
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II Surface wash systems for filters agitate the top _____ inches of the media. - 2
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After the air alone portion of the wash cycle is complete, water is introduced at a rate of
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______ to _____ gpm/ft, which is called concurrent air/water wash - 5 to 7
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A diffuser feeding a pipeline with chlorine gas solution should have complete mixing
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downstream at a distance of _______ pipe diameters. - 10
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Flow proportional control - chlorine gas controller if chlorine demand rarely changes and
II II II II II II II II II II II II II II II
it is necessary to compensate only for changes in the pumping rate.
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Compound Loop Control - Chlorine gas controller that automatically maintains a
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constant chlorine residual regardless of chlorine demand or flow rate changes.
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In fluoride saturator tanks, the chemical solution should be at least _____ inches deep,
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and if the saturator treats more than 100 gpm, it should have a chemical depth of at least
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_______ inches. - 6; 10
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II Down flow fluoride saturator tanks should be cleaned how often? - 1 to 3 times per year
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