TCEQ class c water license exam UPDATED 2025/2026
WITH CORRECT/ACCURATE ANSWERS
State Agency responsince for enforcing the safe drinking water act in Texas
Ans: Texas Commission on environmental Quality
Quiz What minerals can cause water hardness
Ans: Calcium and magnesium
Quiz A public water system must at all times provide
Ans: Adequate quantity of water, pressure, and disinfection
Quiz A source groundwater would be
Ans: aquifer
Quiz Fecal coliform organisms sometimes found in water supplies are an indication that
,Ans: Water supply is contaminated, harmful bacteria may be present, possible pathogenic organisms in
the water, water is unsuitable for drinking
Quiz A disease that may be spread by inadequately disinfected water
Ans: Dysentery
Quiz A common chemical used in disinfection of small water supply is
Ans: Calcium hypochlorite
Quiz A physical connection between a potable water supply and house well would be
Ans: A cross connection
Quiz The amount of chlorine in mg/L that is used up by reacting with iron organics of bacteria is called
Ans: Demand
Quiz Which of the following is a physical characteristic of chlorine gas
Ans: Greenish-Yellow Color, heavier than air, pungent penetrating odor, corrosive
Quiz Which of the following would be considered a part of a hypo-chlorinator system
, Ans: Solution feed pump
Quiz According to state requirements, all public water Supply wells should be provided with a raised
concrete sealing block, screened vents, and-
Ans: A flow measuring device
Quiz Drawdown of a water well is determined by
Ans: Difference in static and pumping levels
Quiz pH of water indicates
Ans: If it's acidic or basic
Quiz The pH of water is expressed on a pH scale of
Ans: 0-14
Quiz Water that is considered neutral is expressed on the pH scale at
Ans: 7.0
Quiz Which of the following is a required Step in collecting a routine distribution sample for
bacteriological testing?
WITH CORRECT/ACCURATE ANSWERS
State Agency responsince for enforcing the safe drinking water act in Texas
Ans: Texas Commission on environmental Quality
Quiz What minerals can cause water hardness
Ans: Calcium and magnesium
Quiz A public water system must at all times provide
Ans: Adequate quantity of water, pressure, and disinfection
Quiz A source groundwater would be
Ans: aquifer
Quiz Fecal coliform organisms sometimes found in water supplies are an indication that
,Ans: Water supply is contaminated, harmful bacteria may be present, possible pathogenic organisms in
the water, water is unsuitable for drinking
Quiz A disease that may be spread by inadequately disinfected water
Ans: Dysentery
Quiz A common chemical used in disinfection of small water supply is
Ans: Calcium hypochlorite
Quiz A physical connection between a potable water supply and house well would be
Ans: A cross connection
Quiz The amount of chlorine in mg/L that is used up by reacting with iron organics of bacteria is called
Ans: Demand
Quiz Which of the following is a physical characteristic of chlorine gas
Ans: Greenish-Yellow Color, heavier than air, pungent penetrating odor, corrosive
Quiz Which of the following would be considered a part of a hypo-chlorinator system
, Ans: Solution feed pump
Quiz According to state requirements, all public water Supply wells should be provided with a raised
concrete sealing block, screened vents, and-
Ans: A flow measuring device
Quiz Drawdown of a water well is determined by
Ans: Difference in static and pumping levels
Quiz pH of water indicates
Ans: If it's acidic or basic
Quiz The pH of water is expressed on a pH scale of
Ans: 0-14
Quiz Water that is considered neutral is expressed on the pH scale at
Ans: 7.0
Quiz Which of the following is a required Step in collecting a routine distribution sample for
bacteriological testing?
