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TCEQ CLASS D WATER OPERATOR LICENSE EXAM LATEST WITH ACTUAL QUESTIONS AND CORRECT VERIFIED ANSWERS ALREADY GRADED A+ 100% GUARANTEED PASS! $27.99
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TCEQ CLASS D WATER OPERATOR LICENSE EXAM LATEST 2024-2025
WITH ACTUAL QUESTIONS AND CORRECT VERIFIED ANSWERS
ALREADY GRADED A+ 100% GUARANTEED PASS!
Rule of capture - ANSWER-Permits owner of a well to pump as much water as
desired, even if water is drained from beneath the land of others
when treating surface water, the process of coagulation will be affected by -
ANSWER-all of the above
a public water system is responsible for providing - ANSWER-all of the above
a common type of oxidant that is used at most surface water treatment plants
to kill bacteria and to prevent trihalomethane formation is - ANSWER-
combined chlorine
Which of the following is a required step in collecting a routine distribution
sample of microbiological analysis - ANSWER-use a sterilized bottles containing
sodium thiosulfate
which minerals cause water hardness - ANSWER-calcium and magnesium
Before a new main is placed into service, it must be properly disinfected with a
minimum chlorine dosage of:
a) 50 mg/L
A disease which may be spread by inadequately disinfected water is - ANSWER-
Hepatitis A
A physical connection between a potable water supply and non-potable water
source is - ANSWER-cross connection
underground geological water bearing formations that are used for public
water supplies are called - ANSWER-aquifers
Gravity filters will remove which of the following from surface water supplies:
a) turbidity
b) taste and odors
c) nitrates
d) hardness
e) chlorides - ANSWER-turbidity
Activated carbon is used at a surface water treatment plant primarily for -
ANSWER-taste and odor control
Your ground storage tank is 15 feet high and 30 feet in diameter. About how
much water can it hold?
a) 31,700 gallons
b) 79,270 gallons
If you added 3.5 mg/L of chlorine to your storage tank and 30 minutes later
measured the residual at 1.2 mg/L, what was the chlorine demand in the tank?
a) 4.2
b) 2.9
c) 0.3
d) 2.3
e) 4.7 - ANSWER-2.3
which of the following chemicals is commonly used as a coagulant in surface
water treatment - ANSWER-aluminum sulfate
The drawdown of a well is determined by:
a) a properly installed air line
b) the difference between the static and pumping level
c) a psi gage calibrated in feet of water
d) a tape measure
e) an electronic sounder - ANSWER-the difference between static and pumping
level
you are setting your chlorinator to feed a dosage of 5.0 mg/L. If your daily
water pumpage is 500,000 gallons, the gas chlorinator should be set at how
many pounds per day - ANSWER-21 ppd
, which of the following is a characteristic of gas chlorine - ANSWER-pungent,
biting odor
disinfection means - ANSWER-the destroying of pathogenic organisms
the mesh size is an important feature of a well screen because properly sized
opening should - ANSWER-reduced the amount of sand pumped from the well
according to states rules, all public water supply wells must be provided with
concrete sealing slabs, screened casing vents, raw water sampling taps and -
ANSWER-flow measuring devices
the amount of chlorine in mg/L is used up by reactions with organics and
inorganics is called - ANSWER-demand
A water system collecting more than one bacteriological sample each month
that has one positive sample result for coliform must collect ____ repeat
samples within ____ hours of being notified of the positive result. - ANSWER-
3,24
Safe Drinking water act in what year - ANSWER-1974
in 1978, TDH assumed primacy over the Safe Drinking water act from the EPA -
ANSWER-True
Only about 1 gallon of tap water per person/day is used for drinking and
cooking - ANSWER-T
In TX agricultural water demand accounts for about % of total water used -
ANSWER-57
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