Wastewater grade 4 - Study guides, Class notes & Summaries
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CWEA Collection Systems Maintenance(Practice Questions for CWEA Grade 1 and 2 Tests)Answered Correctly!!
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CWEA Collection Systems Maintenance(Practice Questions for CWEA Grade 1 and 2 Tests)Answered Correctly!! 
 
Why are gasoline and volatile solvents objectionable when present in a sewer? 
They produce an explosion hazard 
You should never attempt to install, maintain, repair or replace electrical equipment panels, controls, wiring or circuits unless 
You know what you are doing, are qualified and are authorized 
What are the different areas of traffic zones? 
Advance Warning Area, Transition Area...
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WASTEWATER CLASS B TEXAS WITH 100% CORRECT ANSWERS.
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The name of the State Agency responsible for enforcing pollution control laws in Texas 
Texas Commission of Environmental Quality 
 
 
 
The term pathogenic means 
Capable of causing disease 
 
 
 
The minimum separation between sewer lines and potable water lines is 
9 feet 
 
 
 
A licensed wastewater operator is a professional 
consistently does best job possible, practices personal safety, strives to improve job knowledge, strives to keep the plant and collection system in the best appearanc...
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CWEA Collection Systems Maintenance Practice Questions for CWEA Grade 1 and 2 Tests
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CWEA Collection Systems Maintenance 
Practice Questions for CWEA Grade 1 
 
and 2 Tests 
 
Why are gasoline and volatile solvents objectionable when present in a sewer? - They 
produce an explosion hazard 
 
You should never attempt to install, maintain, repair or replace electrical equipment panels, 
controls, wiring or circuits unless - You know what you are doing, are qualified and are 
authorized 
 
What are the different areas of traffic zones? - Advance Warning Area, Transition Area, 
Acti...
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Basic Wastewater D Exam Questions and Complete Solutions
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Basic Wastewater D Exam Questions and Complete Solutions 
 
1. Water resources in Texas include lakes, rivers, bays, estuaries, wetlands, groundwater, and stormwater runoff. 
 
a. true 
 
b. false - Answer: b 
 
2. Water pollutants include organic and inorganic material, heat, and radiation. 
 
a. true 
 
b. false - Answer: a 
 
3. In Texas, clean water is needed to provide for human consumption and recreation, maintain aquatic habitats for wildlife, supply bays with fresh water, recharge gr...
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Waste Water D license Study Exam Questions and Complete Solutions.
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Waste Water D license Study Exam Questions and Complete Solutions 
 
Water Resources in Texas includes lakes, rivers, bays, estuaries, wetlands, ground water, and storm (1-3) - Answer: False 
 
Water Polluntants include organic and inorganic material, heat, and radiation (1-4) - Answer: True 
 
In Texas, Clean water is needed to provide for human comsumption and recreation, Maintain aquatic habitats for wildlife, recharge ground water, and provide for industry. (1-4) - Answer: False 
 
Two sourc...
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Ca Grade 2 Wastewater Treatment Operator Practice Exam 4 with complete solution 2023/2024
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Ca Grade 2 Wastewater Treatment Operator Practice Exam 4 with complete solution 2023/2024
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WASTEWATER PRACTICE EXAM 2024 with complete solutions
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Odors occur when treatment becomes - ANSWER-Anaerobic 
What should an operator do before entering a manhole - ANSWER-Test for all 
hazardous gases and oxygen levels and ventilate the manhole before entering 
What treatment devices is commonly used to separate and remove large solids from 
raw wastewater - ANSWER-a mechanically raked bar screen 
What diseases are caused by pathogenic organisms that may be present in raw 
wastewater? - ANSWER-Hepatitis, typhoid, paratyphoid, dysentery, and cholera...
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CWEA GRADE 4 TEST PART 2 100% ACCURATE REVIEW EXAM SOLUTION
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CWEA GRADE 4 TEST PART 2 100% ACCURATE REVIEW EXAM SOLUTION 
Acid: - Answer-A substance which releases hydrogen ions 
when dissolved in water. Most acids will dissolve 
the common metals and will react with a base to 
form a neutral salt and water. An acid is the opposite 
of an alkali, has a pH rating lower than 7.0, 
will turn litmus paper red, and has a sour taste. 
Acidity: - Answer-The quantitative capacity of water or a 
water solution to neutralize an alkali or base. It is 
usually measur...
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wastewater grade 1 exam Treatment updated 20-24/2025
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wastewater grade 1 exam Treatment updated 20-24/2025 
domestic wastewater 
Comes from schools, homes, hospitals, businesses, light industrial facilities. 
 
 
population equivalents 
100 lbs wastewater per day, .2 lbs TSS/day, .17 BOD/day 
 
 
industrial wastewater 
Comes from industries. Compatible wastes can be processed by the plant. Incompatible wastes are toxic to the plant. 
 
 
sanitary wastewater 
The combined domestic and industrial waste waters from community. 
 
 
storm water 
Water t...
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CWEA Grade 4 Test
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CWEA Grade 4 Test 
AA ANS-atomic absorption 
 
AC ANS-power alternating current 
 
ac ANS-acre 
 
AF ANS-acre-foot (feet) 
 
AFY ANS-acre-foot per year 
 
AMSA ANS-Association of Metropolitan Sewerage 
Agencies 
 
ANSI ANS-American National Standards Institute 
 
APHA ANS-American Public Health Association 
 
AS ANS-activated sludge 
 
ASCE ANS-American Society of Civil Engineers 
 
ASME ANS-American Society of Mechanical 
Engineers 
 
ASTM ANS-American Society for Testing and 
Materials 
 
AWT ...
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