TCEQ CLASS A PREP PART 1 EXAM QUESTIONS AND
ANSWERS 2026/2027 ALL ANSWERS CORRECT
VERIFIED AND BEST GRADED TO SCORE A+
The four water quality standards established for drinking water in the Safe Drinking Water
Act are chemical, bacteriological,radiological and - CORRECT ANSWERS chemical,
bacteriological,radiological and physical.
The minimue allowable pressure in the distribution system under emergency conditions is -
CORRECT ANSWERS 20 psi
Water vapor given off by plants and trees is know as - CORRECT ANSWERS tranpiration
organic matter includes - CORRECT ANSWERS wood,dogs,algae,bacteria
The single most important water treatment process is - CORRECT ANSWERS disinfection
excessive nitrates in drinking water can cause what syndrom in infants - CORRECT ANSWERS
blue baby
A sanitary control easement must cover land within how many feet of a public water well -
CORRECT ANSWERS 150 feet
A sample for physical and chemical analysis of a new well must be taken after how many
hours of continuous pumping - CORRECT ANSWERS 36 hours
Chapter 290 Rules and Regulations requries chemical analysis of water supplies every -
CORRECT ANSWERS year
Detention time in sedimetation basins must be at least how many hours to allow floc to
settle - CORRECT ANSWERS six
backwashing should expand the filter media by - CORRECT ANSWERS 30 to 50 percent
, TCEQ CLASS A PREP PART 1 EXAM QUESTIONS AND
ANSWERS 2026/2027 ALL ANSWERS CORRECT
VERIFIED AND BEST GRADED TO SCORE A+
In Texas, all public water systems are required to have what facilities - CORRECT ANSWERS
chlorination
The MCL for Trihalomethanes in drinking water is - CORRECT ANSWERS 0.080 mg/l
At room temperatures chlorine gas is - CORRECT ANSWERS greenish-yellow , has pungent
odor, and is 2.5 heaver then air
Disease that may be spread by inadequately disinfected water are - CORRECT ANSWERS
typhoid, cholera, infectious hepatitis, legionnaires disease.
minimum chlorine residuals of free and toral in the far reaches of the distribution system is -
CORRECT ANSWERS .2/.5
Parameters that effect coagulation are - CORRECT ANSWERS Turbidity, PH and Alkalinity
coagulant and dosage.
Do not work in a trench feet or deeper unless it is protected from cave-in -
CORRECT ANSWERS 5 feet
Place spoil banks at least feet from the excavation - CORRECT ANSWERS 2
dose new water mains with a minimum of---- mg/l or more chlorine for at least how many
hours - CORRECT ANSWERS 100mg/l-3hours or 25mg/l -24 hours
one bacteriological sample is required for each------- of new completed main - CORRECT
ANSWERS 1000 feet of line
A cross connection is a physical connection between a public water supply and ? - CORRECT
ANSWERS 1) another supply of unknown or questionable quality 2) any source that may
contain contamination and 3) any water that is treated to a lesser degree.
ANSWERS 2026/2027 ALL ANSWERS CORRECT
VERIFIED AND BEST GRADED TO SCORE A+
The four water quality standards established for drinking water in the Safe Drinking Water
Act are chemical, bacteriological,radiological and - CORRECT ANSWERS chemical,
bacteriological,radiological and physical.
The minimue allowable pressure in the distribution system under emergency conditions is -
CORRECT ANSWERS 20 psi
Water vapor given off by plants and trees is know as - CORRECT ANSWERS tranpiration
organic matter includes - CORRECT ANSWERS wood,dogs,algae,bacteria
The single most important water treatment process is - CORRECT ANSWERS disinfection
excessive nitrates in drinking water can cause what syndrom in infants - CORRECT ANSWERS
blue baby
A sanitary control easement must cover land within how many feet of a public water well -
CORRECT ANSWERS 150 feet
A sample for physical and chemical analysis of a new well must be taken after how many
hours of continuous pumping - CORRECT ANSWERS 36 hours
Chapter 290 Rules and Regulations requries chemical analysis of water supplies every -
CORRECT ANSWERS year
Detention time in sedimetation basins must be at least how many hours to allow floc to
settle - CORRECT ANSWERS six
backwashing should expand the filter media by - CORRECT ANSWERS 30 to 50 percent
, TCEQ CLASS A PREP PART 1 EXAM QUESTIONS AND
ANSWERS 2026/2027 ALL ANSWERS CORRECT
VERIFIED AND BEST GRADED TO SCORE A+
In Texas, all public water systems are required to have what facilities - CORRECT ANSWERS
chlorination
The MCL for Trihalomethanes in drinking water is - CORRECT ANSWERS 0.080 mg/l
At room temperatures chlorine gas is - CORRECT ANSWERS greenish-yellow , has pungent
odor, and is 2.5 heaver then air
Disease that may be spread by inadequately disinfected water are - CORRECT ANSWERS
typhoid, cholera, infectious hepatitis, legionnaires disease.
minimum chlorine residuals of free and toral in the far reaches of the distribution system is -
CORRECT ANSWERS .2/.5
Parameters that effect coagulation are - CORRECT ANSWERS Turbidity, PH and Alkalinity
coagulant and dosage.
Do not work in a trench feet or deeper unless it is protected from cave-in -
CORRECT ANSWERS 5 feet
Place spoil banks at least feet from the excavation - CORRECT ANSWERS 2
dose new water mains with a minimum of---- mg/l or more chlorine for at least how many
hours - CORRECT ANSWERS 100mg/l-3hours or 25mg/l -24 hours
one bacteriological sample is required for each------- of new completed main - CORRECT
ANSWERS 1000 feet of line
A cross connection is a physical connection between a public water supply and ? - CORRECT
ANSWERS 1) another supply of unknown or questionable quality 2) any source that may
contain contamination and 3) any water that is treated to a lesser degree.
