TCEQ Class A Water License Exam With
Actual Complete Questions And Answers
Rated 100% Correct 2025 Update.
Q: In Texas, water operator licensing is administered by the?
A: TCEQ
Q: Which minerals cause hardness in water?
A: Magnesium and calcium
Q: What is the most important federal law impacting the water utility industry?
A: Safe Drinking Water Act
Q: The four water quality standards established for drinking water in the Safe Drinking
Water Act are chemical, bacteriological, radiological, and?
A: Physical
Q: What is the minimum allowable pressure in the distribution system under emergency
conditions?
A: 20 psi
Q: Water vapor given off by plants and trees is known as?
A: Transpiration
Q: What does organic matter include?
A: Wood, dogs, algae, bacteria
, Q: What is the single most important water treatment process?
A: Disinfection
Q: Excessive nitrates in drinking water can cause what syndrome in infants?
A: Blue baby syndrome
Q: A sanitary control easement must cover land within how many feet of a public water
well?
A: 150 feet
Q: A sample for physical and chemical analysis of a new well must be taken after how
many hours of continuous pumping?
A: 36 hours
Q: Chapter 290 Rules and Regulations requires chemical analysis of water supplies every?
A: Year
Q: Detention time in sedimentation basins must be at least how many hours to allow floc to
settle?
A: Six
Q: Backwashing should expand the filter media by?
A: 30 to 50 percent
Q: In Texas, all public water systems are required to have what facilities?
A: Chlorination
Q: What is the MCL for Trihalomethanes in drinking water?
A: 0.080 mg/l
Actual Complete Questions And Answers
Rated 100% Correct 2025 Update.
Q: In Texas, water operator licensing is administered by the?
A: TCEQ
Q: Which minerals cause hardness in water?
A: Magnesium and calcium
Q: What is the most important federal law impacting the water utility industry?
A: Safe Drinking Water Act
Q: The four water quality standards established for drinking water in the Safe Drinking
Water Act are chemical, bacteriological, radiological, and?
A: Physical
Q: What is the minimum allowable pressure in the distribution system under emergency
conditions?
A: 20 psi
Q: Water vapor given off by plants and trees is known as?
A: Transpiration
Q: What does organic matter include?
A: Wood, dogs, algae, bacteria
, Q: What is the single most important water treatment process?
A: Disinfection
Q: Excessive nitrates in drinking water can cause what syndrome in infants?
A: Blue baby syndrome
Q: A sanitary control easement must cover land within how many feet of a public water
well?
A: 150 feet
Q: A sample for physical and chemical analysis of a new well must be taken after how
many hours of continuous pumping?
A: 36 hours
Q: Chapter 290 Rules and Regulations requires chemical analysis of water supplies every?
A: Year
Q: Detention time in sedimentation basins must be at least how many hours to allow floc to
settle?
A: Six
Q: Backwashing should expand the filter media by?
A: 30 to 50 percent
Q: In Texas, all public water systems are required to have what facilities?
A: Chlorination
Q: What is the MCL for Trihalomethanes in drinking water?
A: 0.080 mg/l
