TCEQ
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This document provides the fully updated 2026/2027 TCEQ Class A Prep Part 1 exam questions with verified 100% correct answers. It covers essential water and wastewater operational topics such as treatment processes, disinfection, math calculations, regulations, monitoring, safety procedures, and system troubleshooting. The material is structured to reflect the format of the actual TCEQ Class A exam and serves as a complete and accurate study resource for top-level preparation.
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This document provides the fully updated 2026/2027 TCEQ Class A Prep Part 1 exam questions with verified 100% correct answers. It covers essential water and wastewater operational topics such as treatment processes, disinfection, math calculations, regulations, monitoring, safety procedures, and system troubleshooting. The material is structured to reflect the format of the actual TCEQ Class A exam and serves as a complete and accurate study resource for top-level preparation.
TCEQ Class B Surface Water B test material –Exam 2025/2026 with Questions and Correct Answers| Latest Update | Graded A+ 2025/2026 with Questions and Correct Answers| Latest Update | Graded A+
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TCEQ Class B Surface Water B test material –Exam 2025/2026 with Questions and Correct Answers| Latest Update | Graded A+ 2025/2026 with Questions and Correct Answers| Latest Update | Graded A+
TEXAS IRRIGATOR LICENSE EXAM 2025 
COMPLETE ACTUAL EXAM QUESTIONS WITH 
DETAILED VERIFIED ANSWERS | ALREADY 
GRADED A+ | GUARANTEED PASS 
The _________ is the flexible part of an automatic valve which regulates the 
passage of water - Correct Answer > DIAPHRAGM 
The ________________. can be installed below grade (ground level) - 
Correct Answer > Double Check Valve Assembly 
PVC pipe with the same physical dimensions as iron pipe. - Correct Answer 
> SCHEDULE PIPE 
________ is the pr...
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BUNDLE OF TEXAS IRRIGATOR LICENSE EXAM 2025 COMPLETE ACTUAL EXAM QUESTIONS WITH DETAILED VERIFIED ANSWERS | ALREADY GRADED A+ | GUARANTEED PASS• By NurseAdvocate
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TEXAS IRRIGATOR LICENSE EXAM 2025 
COMPLETE ACTUAL EXAM QUESTIONS WITH 
DETAILED VERIFIED ANSWERS | ALREADY 
GRADED A+ | GUARANTEED PASS 
The _________ is the flexible part of an automatic valve which regulates the 
passage of water - Correct Answer > DIAPHRAGM 
The ________________. can be installed below grade (ground level) - 
Correct Answer > Double Check Valve Assembly 
PVC pipe with the same physical dimensions as iron pipe. - Correct Answer 
> SCHEDULE PIPE 
________ is the pr...
TCEQ CLASS D WATER OPERATOR LICENSE EXAM NEWEST ACTUAL EXAM COMPLETE 180 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) ALREADY GRADED A+.pdf
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Handbook of Water and Wastewater Treatment Plant Operations • Frank R. Spellman• ISBN 9781000063226
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test bank kkkjgwqrty• By REVISIONGENIUS
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TCEQ CLASS D WATER OPERATOR LICENSE EXAM NEWEST ACTUAL EXAM COMPLETE 180 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) ALREADY GRADED A+.pdf
Who has the responsibility to provide drinking water that meets federal and state standards? - correct answer️️Operators 
 
____________ must be disinfected, delivered at adequate pressure, and be ample in quantity. - correct answer️️Water 
 
_____________ should guard the water supply and facilities from contamination and even terrorism. - correct answer️️Utility employees 
 
The ______________ requires bacteriological sample results be kept 5 years. - correct answer️️State 
 
T...
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Who has the responsibility to provide drinking water that meets federal and state standards? - correct answer️️Operators 
 
____________ must be disinfected, delivered at adequate pressure, and be ample in quantity. - correct answer️️Water 
 
_____________ should guard the water supply and facilities from contamination and even terrorism. - correct answer️️Utility employees 
 
The ______________ requires bacteriological sample results be kept 5 years. - correct answer️️State 
 
T...
Describe proper design of force main wastewater lines - CORRECT ANSWERS Minimum 2 fps velocity with the smallest pump operating alone. 
Minimum 4 inch diameter pipe 
150 psi rating. 
 
What is Standard Dimension Ratio? - CORRECT ANSWERS Ratio of outside pipe diameter (OD) to wall thickness (PVC) 
 
Describe proper design of gravity wastewater lines. - CORRECT ANSWERS Designed to flow half full under normal conditions at a minimum of 2 fps 
maximum of 10 fps.
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TCEQ Class C AND D Water License Exam Questions and Answers 2024• By THEEXCELLENCELIBRARY
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Describe proper design of force main wastewater lines - CORRECT ANSWERS Minimum 2 fps velocity with the smallest pump operating alone. 
Minimum 4 inch diameter pipe 
150 psi rating. 
 
What is Standard Dimension Ratio? - CORRECT ANSWERS Ratio of outside pipe diameter (OD) to wall thickness (PVC) 
 
Describe proper design of gravity wastewater lines. - CORRECT ANSWERS Designed to flow half full under normal conditions at a minimum of 2 fps 
maximum of 10 fps.
1. 
State Agency responsince for enforcing the safe drinking water act in Texas: Texas Commission on environmental Quality 
2. 
What minerals can cause water hardness: Calcium and magnesium 
3. 
A public water system must at all times provide: Adequate quantity of water, pressure, and disinfection 
4. 
A source groundwater would be: aquifer 
5. 
Fecal coliform organisms sometimes found in water supplies are an indica- tion that: Water supply is contaminated, harmful bacteria may be present, poss...
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TCEQ Class C AND D Water License Exam Questions and Answers 2024• By THEEXCELLENCELIBRARY
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1. 
State Agency responsince for enforcing the safe drinking water act in Texas: Texas Commission on environmental Quality 
2. 
What minerals can cause water hardness: Calcium and magnesium 
3. 
A public water system must at all times provide: Adequate quantity of water, pressure, and disinfection 
4. 
A source groundwater would be: aquifer 
5. 
Fecal coliform organisms sometimes found in water supplies are an indica- tion that: Water supply is contaminated, harmful bacteria may be present, poss...
Waste Water D license Study With Correct Answers. 
 
Water Resources in Texas includes lakes, rivers, bays, estuaries, wetlands, ground water, and storm (1-3) 
False 
Water Polluntants include organic and inorganic material, heat, and radiation (1-4) 
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) 
False 
Two sources of water contamination are discharges and non-...
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Waste Water D license Study With Correct Answers. 
 
Water Resources in Texas includes lakes, rivers, bays, estuaries, wetlands, ground water, and storm (1-3) 
False 
Water Polluntants include organic and inorganic material, heat, and radiation (1-4) 
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) 
False 
Two sources of water contamination are discharges and non-...
Class D Water Operator License Exam TCEQ With Complete Solutions. 
 
T/F: In Texas, about 75% of all water is used for commercial, industrial, or agricultural purposes. 
True 
Water covers approximately ________ of Earth's surface. 
71% 
Drought is an extended period when a region receives a deficiency in its ________ water supply. 
atmospheric, ground, or surface 
T/F: Only about 1 gallon of tap water per person/day is used for drinking and cooking 
True 
Excluding outside water use, the avera...
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Class D Water Operator License Exam TCEQ With Complete Solutions. 
 
T/F: In Texas, about 75% of all water is used for commercial, industrial, or agricultural purposes. 
True 
Water covers approximately ________ of Earth's surface. 
71% 
Drought is an extended period when a region receives a deficiency in its ________ water supply. 
atmospheric, ground, or surface 
T/F: Only about 1 gallon of tap water per person/day is used for drinking and cooking 
True 
Excluding outside water use, the avera...
Texas Class D Water License(Complete)Questions And Answers. 
 
What removes tastes, odors, and certain organics and gases, and oxidizes iron and manganese? This process includes the incorporation of air into the water by means of spray nozzles , steps or cascades, or trays of diffusers? 
Aeration 
TCEQ regulation states that Shore installations , marinas, boats and houses on the watershed must have sewage? 
disposal 
Water aerated or chlorinated at proper pH levels oxidizes the iron and manganes...
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Texas Class D Water License(Complete)Questions And Answers. 
 
What removes tastes, odors, and certain organics and gases, and oxidizes iron and manganese? This process includes the incorporation of air into the water by means of spray nozzles , steps or cascades, or trays of diffusers? 
Aeration 
TCEQ regulation states that Shore installations , marinas, boats and houses on the watershed must have sewage? 
disposal 
Water aerated or chlorinated at proper pH levels oxidizes the iron and manganes...