TEXAS CLASS D WATER LICENSE EXAM WITH 100% RATED
CORRECT REAL EXAM QUESTIONS AND CORRECT ANSWERS|
GRADED A+ |2025 LATEST VERSION | 100% VERIFIED
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? - (answer)Aeration
TCEQ regulation states that Shore installations , marinas, boats and houses on the watershed
must have sewage? - (answer)disposal
Water aerated or chlorinated at proper pH levels oxidizes the iron and manganese, turning them
into solid? - (answer)particles
Well casing and cementing protect the well from collapse and surface ? - (answer)contamination
Sequestering does not remove iron from the water, but prevents it from combining with oxygen
and? - (answer)reddening
The quantity of water a formation yields depends on the formations thickness and? -
(answer)permeability
Cascade aerators, packed air-stripping towers, and air diffusers are used to aerate? -
(answer)water
,Aeration can be used to remove what from the water supply? - (answer)iron and manganese
Hydrogen sulfide has a rotten egg odor and is oxidized by? - (answer)super-chlorination
When Iron levels get this high, it can cause red stains on clothing, colored water, or turbidity? -
(answer)0.3 mg/L
Excess Manganese can cause? - (answer)black stains
Another method of iron control is the use of? - (answer)sequestering agents
What is a sequestering agent? - (answer)polyphosphates
Well water is sometimes? - (answer)corrosive
Low ph, dissolved gases, high temperatures, and high mineral levels can cause well water to be?
- (answer)corrosive
What is the process of removing calcium and magnesium by adding lime or by exchanging ions?
- (answer)softening
An ion exchange replaces calcium ions with? - (answer)sodium ions
,A process available for removing arsenic, fluoride, lead, mercury, nitrate, and silver from raw
water is? - (answer)coagulation followed by sedimentation and filtration
A process that forces water through a membrane is? - (answer)reverse osmosis
In reverse osmosis a sheet of synthetic material (membrane) under pressure prevents passage of
dissolved materials and larger particles and ejects them in a? - (answer)waste stream
The Surface Water Treatment Rule (SWTR) requires community and non-community wells,
springs, and infiltration galleries ( a subsurface tunnel that collects groundwater) to determine
possible direct influence of? - (answer)surface water
Changes in groundwater quality can indicate influence of surface water organisms such as
giardia cysts, algae or other? - (answer)microorganisms
If well is deeper than 50 feet and more than 200 feet from a nearby surface water body, extensive
evaluation of the influence of surface water on a water supply is? - (answer)not required
Surface water evaluations are needed on a water supply when shifts in water quality occur such
as turbidity, temperature, pH, and the presence of? - (answer)surface water organisms
What are underground, water-bearing formations yielding useful quantities of water? -
(answer)Aquifiers
, Problems caused by what are declining water levels and subsidence (sinking of land)? -
(answer)overpumping
The purpose of the well screen is to keep out birds and? - (answer)sand
the most important feature of the well screen is the size of the? - (answer)opening
The mesh size of the screen is determined by the size of the aquifer material, the size of the
gravel in the gravel pack, and the type of well ? - (answer)development
The gravel pack is fine gravel placed around the screen to reduce pumping? - (answer)sand
The well vent is a vacuum breaker allowing the casing to breathe as water levels change when
the pump? - (answer)cycles
All public wells must be provided with a steel sealing block, a meter, a screened vent, and a
sampling? - (answer)faucet
No source of contamination is allowed within how many feet of a public well? - (answer)50
One way to reduce sand pumping is to decrease the pump rate and cycle? - (answer)less
Water from a new well must not be used until bacteriological samples on three successive days
show no? - (answer)coliform
CORRECT REAL EXAM QUESTIONS AND CORRECT ANSWERS|
GRADED A+ |2025 LATEST VERSION | 100% VERIFIED
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? - (answer)Aeration
TCEQ regulation states that Shore installations , marinas, boats and houses on the watershed
must have sewage? - (answer)disposal
Water aerated or chlorinated at proper pH levels oxidizes the iron and manganese, turning them
into solid? - (answer)particles
Well casing and cementing protect the well from collapse and surface ? - (answer)contamination
Sequestering does not remove iron from the water, but prevents it from combining with oxygen
and? - (answer)reddening
The quantity of water a formation yields depends on the formations thickness and? -
(answer)permeability
Cascade aerators, packed air-stripping towers, and air diffusers are used to aerate? -
(answer)water
,Aeration can be used to remove what from the water supply? - (answer)iron and manganese
Hydrogen sulfide has a rotten egg odor and is oxidized by? - (answer)super-chlorination
When Iron levels get this high, it can cause red stains on clothing, colored water, or turbidity? -
(answer)0.3 mg/L
Excess Manganese can cause? - (answer)black stains
Another method of iron control is the use of? - (answer)sequestering agents
What is a sequestering agent? - (answer)polyphosphates
Well water is sometimes? - (answer)corrosive
Low ph, dissolved gases, high temperatures, and high mineral levels can cause well water to be?
- (answer)corrosive
What is the process of removing calcium and magnesium by adding lime or by exchanging ions?
- (answer)softening
An ion exchange replaces calcium ions with? - (answer)sodium ions
,A process available for removing arsenic, fluoride, lead, mercury, nitrate, and silver from raw
water is? - (answer)coagulation followed by sedimentation and filtration
A process that forces water through a membrane is? - (answer)reverse osmosis
In reverse osmosis a sheet of synthetic material (membrane) under pressure prevents passage of
dissolved materials and larger particles and ejects them in a? - (answer)waste stream
The Surface Water Treatment Rule (SWTR) requires community and non-community wells,
springs, and infiltration galleries ( a subsurface tunnel that collects groundwater) to determine
possible direct influence of? - (answer)surface water
Changes in groundwater quality can indicate influence of surface water organisms such as
giardia cysts, algae or other? - (answer)microorganisms
If well is deeper than 50 feet and more than 200 feet from a nearby surface water body, extensive
evaluation of the influence of surface water on a water supply is? - (answer)not required
Surface water evaluations are needed on a water supply when shifts in water quality occur such
as turbidity, temperature, pH, and the presence of? - (answer)surface water organisms
What are underground, water-bearing formations yielding useful quantities of water? -
(answer)Aquifiers
, Problems caused by what are declining water levels and subsidence (sinking of land)? -
(answer)overpumping
The purpose of the well screen is to keep out birds and? - (answer)sand
the most important feature of the well screen is the size of the? - (answer)opening
The mesh size of the screen is determined by the size of the aquifer material, the size of the
gravel in the gravel pack, and the type of well ? - (answer)development
The gravel pack is fine gravel placed around the screen to reduce pumping? - (answer)sand
The well vent is a vacuum breaker allowing the casing to breathe as water levels change when
the pump? - (answer)cycles
All public wells must be provided with a steel sealing block, a meter, a screened vent, and a
sampling? - (answer)faucet
No source of contamination is allowed within how many feet of a public well? - (answer)50
One way to reduce sand pumping is to decrease the pump rate and cycle? - (answer)less
Water from a new well must not be used until bacteriological samples on three successive days
show no? - (answer)coliform
