TEXAS CLASS D WATER LICENSE (COMPLETE)
QUESTIONS AND ANSWERS!!
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?
Ans: Aeration
TCEQ regulation states that Shore installations , marinas, boats and houses on the watershed must have
sewage?
Ans: disposal
Water aerated or chlorinated at proper pH levels oxidizes the iron and manganese, turning them into
solid?
Ans: particles
Well casing and cementing protect the well from collapse and surface ?
Ans: contamination
Sequestering does not remove iron from the water, but prevents it from combining with oxygen and?
,Ans: reddening
The quantity of water a formation yields depends on the formations thickness and?
Ans: permeability
Cascade aerators, packed air-stripping towers, and air diffusers are used to aerate?
Ans: water
Aeration can be used to remove what from the water supply?
Ans: iron and manganese
Hydrogen sulfide has a rotten egg odor and is oxidized by?
Ans: super-chlorination
When Iron levels get this high, it can cause red stains on clothing, colored water, or turbidity?
Ans: 0.3 mg/L
Excess Manganese can cause?
Ans: black stains
Another method of iron control is the use of?
Ans: sequestering agents
What is a sequestering agent?
, Ans: polyphosphates
Well water is sometimes?
Ans: corrosive
Low ph, dissolved gases, high temperatures, and high mineral levels can cause well water to be?
Ans: corrosive
What is the process of removing calcium and magnesium by adding lime or by exchanging ions?
Ans: softening
An ion exchange replaces calcium ions with?
Ans: sodium ions
A process available for removing arsenic, fluoride, lead, mercury, nitrate, and silver from raw water is?
Ans: coagulation followed by sedimentation and filtration
A process that forces water through a membrane is?
Ans: 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?
Ans: 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?
QUESTIONS AND ANSWERS!!
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?
Ans: Aeration
TCEQ regulation states that Shore installations , marinas, boats and houses on the watershed must have
sewage?
Ans: disposal
Water aerated or chlorinated at proper pH levels oxidizes the iron and manganese, turning them into
solid?
Ans: particles
Well casing and cementing protect the well from collapse and surface ?
Ans: contamination
Sequestering does not remove iron from the water, but prevents it from combining with oxygen and?
,Ans: reddening
The quantity of water a formation yields depends on the formations thickness and?
Ans: permeability
Cascade aerators, packed air-stripping towers, and air diffusers are used to aerate?
Ans: water
Aeration can be used to remove what from the water supply?
Ans: iron and manganese
Hydrogen sulfide has a rotten egg odor and is oxidized by?
Ans: super-chlorination
When Iron levels get this high, it can cause red stains on clothing, colored water, or turbidity?
Ans: 0.3 mg/L
Excess Manganese can cause?
Ans: black stains
Another method of iron control is the use of?
Ans: sequestering agents
What is a sequestering agent?
, Ans: polyphosphates
Well water is sometimes?
Ans: corrosive
Low ph, dissolved gases, high temperatures, and high mineral levels can cause well water to be?
Ans: corrosive
What is the process of removing calcium and magnesium by adding lime or by exchanging ions?
Ans: softening
An ion exchange replaces calcium ions with?
Ans: sodium ions
A process available for removing arsenic, fluoride, lead, mercury, nitrate, and silver from raw water is?
Ans: coagulation followed by sedimentation and filtration
A process that forces water through a membrane is?
Ans: 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?
Ans: 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?
