TCEQ class c water license exam
State Agency responsince for imposing the safe drinking water act in Texas
Texas Commission on environmental Quality
What minerals can cause water hardness
Calcium and magnesium
A public water device ought to always offer
Adequate quantity of water, strain, and disinfection
A source groundwater might be
aquifer
Fecal coliform organisms once in a while determined in water elements are a demonstration that
Water supply is contaminated, dangerous bacteria can be gift, possible pathogenic organisms in
the water, water is mistaken for ingesting
A disorder that can be spread by inadequately disinfected water
Dysentery
A commonplace chemical utilized in disinfection of small water deliver is
Calcium hypochlorite
A physical connection between a potable water supply and house properly could be
A cross connection
The amount of chlorine in mg/L this is used up by way of reacting with iron organics of bacteria
is referred to as
Demand
Which of the following is a bodily feature of chlorine gasoline
,Greenish-Yellow Color, heavier than air, smelly penetrating scent, corrosive
Which of the subsequent might be taken into consideration part of a hypo-chlorinator machine
Solution feed pump
According to nation necessities, all public water Supply wells need to be provided with a raised
concrete sealing block, screened vents, and-
A drift measuring device
Drawdown of a water nicely is determined with the aid of
Difference in static and pumping stages
pH of water suggests
If it's acidic or basic
The pH of water is expressed on a pH scale of
zero-14
Water that is taken into consideration neutral is expressed at the pH scale at
7.0
Which of the subsequent is a required Step in gathering a habitual distribution sample for
bacteriological trying out?
Use of an accepted, sterile sample box
Sand filtration will get rid of which of the following from surface water
Turbidity
Activated carbon is utilized in a surface water plant mostly for
Taste and smell control
Which or the following chemicals are commonly used as coagulants in surface water treatment
Alum and ferric chloride
, Ground garage tanks are required to provided with which of the following
Screened vents, an permitted locking roof hatch, an overflow pipe with hinged flap device,
annual inspection and maintenance as needed
An increased garage tank ought to be included against corrosion by
Painting, cathodic safety, water stabilization, and most effective using galvanized and lead
primarily based primed components
A public water supply gadget should maintain residual pressure of 20 psi and a minimum of
regular operating pressure of
35 psi
Before a new or repaired water line is located into provider, it should be nicely disinfected by
offering a chlorine dosage of _________ and right detention time
50 mg/L
Water bearing formations below the earths floor which might be used as a supply of water for
public water supplies are
Aquifers
The motive of an air line on a well is
Determine Water leves in the properly
The mesh length is an critical function of a well display because nicely sized openings have to
Reduce the quantity of Sand pumped
When treating surface Water, the process of coagularon can be most affected by the
pH, alkalinity, temperature, and chemical Dosage
A speedy sand filter out ought to be backwashed When
The lack of head gauge indicated among 6 and 10 toes
Which of the subsequent is an appropriate disinfection residual at the a long way reaches of the
distribution System
State Agency responsince for imposing the safe drinking water act in Texas
Texas Commission on environmental Quality
What minerals can cause water hardness
Calcium and magnesium
A public water device ought to always offer
Adequate quantity of water, strain, and disinfection
A source groundwater might be
aquifer
Fecal coliform organisms once in a while determined in water elements are a demonstration that
Water supply is contaminated, dangerous bacteria can be gift, possible pathogenic organisms in
the water, water is mistaken for ingesting
A disorder that can be spread by inadequately disinfected water
Dysentery
A commonplace chemical utilized in disinfection of small water deliver is
Calcium hypochlorite
A physical connection between a potable water supply and house properly could be
A cross connection
The amount of chlorine in mg/L this is used up by way of reacting with iron organics of bacteria
is referred to as
Demand
Which of the following is a bodily feature of chlorine gasoline
,Greenish-Yellow Color, heavier than air, smelly penetrating scent, corrosive
Which of the subsequent might be taken into consideration part of a hypo-chlorinator machine
Solution feed pump
According to nation necessities, all public water Supply wells need to be provided with a raised
concrete sealing block, screened vents, and-
A drift measuring device
Drawdown of a water nicely is determined with the aid of
Difference in static and pumping stages
pH of water suggests
If it's acidic or basic
The pH of water is expressed on a pH scale of
zero-14
Water that is taken into consideration neutral is expressed at the pH scale at
7.0
Which of the subsequent is a required Step in gathering a habitual distribution sample for
bacteriological trying out?
Use of an accepted, sterile sample box
Sand filtration will get rid of which of the following from surface water
Turbidity
Activated carbon is utilized in a surface water plant mostly for
Taste and smell control
Which or the following chemicals are commonly used as coagulants in surface water treatment
Alum and ferric chloride
, Ground garage tanks are required to provided with which of the following
Screened vents, an permitted locking roof hatch, an overflow pipe with hinged flap device,
annual inspection and maintenance as needed
An increased garage tank ought to be included against corrosion by
Painting, cathodic safety, water stabilization, and most effective using galvanized and lead
primarily based primed components
A public water supply gadget should maintain residual pressure of 20 psi and a minimum of
regular operating pressure of
35 psi
Before a new or repaired water line is located into provider, it should be nicely disinfected by
offering a chlorine dosage of _________ and right detention time
50 mg/L
Water bearing formations below the earths floor which might be used as a supply of water for
public water supplies are
Aquifers
The motive of an air line on a well is
Determine Water leves in the properly
The mesh length is an critical function of a well display because nicely sized openings have to
Reduce the quantity of Sand pumped
When treating surface Water, the process of coagularon can be most affected by the
pH, alkalinity, temperature, and chemical Dosage
A speedy sand filter out ought to be backwashed When
The lack of head gauge indicated among 6 and 10 toes
Which of the subsequent is an appropriate disinfection residual at the a long way reaches of the
distribution System
