COMPLETE / 50+ QUESTIONS WITH DETAILED VERIFIED
ANSWERS / ALREADY GRADED A
Terms in this set (158)
State Agency responsince for Texas Commission on environmental Quality
enforcing the safe drinking
water act in Texas
What minerals can cause Calcium and magnesium
water hardness
A public water system must Adequate quantity of water, pressure, and disinfection
at all times provide
A source groundwater would aquifer
be
Fecal coliform organisms Water supply is contaminated, harmful bacteria may be
sometimes found in water present, possible pathogenic organisms in the water,
supplies are an indication water is unsuitable for drinking
that
A disease that may be Dysentery
spread by inadequately
disinfected water
A common chemical used Calcium hypochlorite
in disinfection of small water
supply is
A physical connection A cross connection
between a potable water
supply and house well
would be
,The amount of chlorine in Demand
mg/L that is used up by
reacting with iron organics of
bacteria is called
Greenish-Yellow Color, heavier than air, pungent penetrating odor,
Which of the following is a
corrosive
physical characteristic of
chlorine gas
Which of the following would Solution feed pump
be considered a part of a
hypo-chlorinator system
According to state A flow measuring device
requirements, all public
water Supply wells should be
provided with a raised
concrete sealing block,
screened vents, and-
Drawdown of a water well is Difference in static and pumping levels
determined by
pH of water indicates If it's acidic or basic
The pH of water is expressed 0-14
on a pH scale of
Water that is considered 7.0
neutral is expressed on the
pH scale at
Which of the following is a Use of an approved, sterile sample container
required Step in collecting a
routine distribution sample
for bacteriological testing?
, Sand filtration will remove Turbidity
which of the following from
surface water
Taste and odor control
Activated carbon is used in
a surface water plant
primarily for
Which or the following Alum and ferric chloride
chemicals are commonly
used as coagulants in surface
water treatment
Ground storage tanks are Screened vents, an approved locking roof hatch, an
required to provided with overflow pipe with hinged flap device, annual inspection
which of the following and maintenance as needed
An elevated storage tank Painting, cathodic protection, water stabilization, and only using
should be protected against galvanized and lead based primed components
corrosion by
A public water supply system 35 psi
should maintain residual
pressure of 20 psi and a
minimum of normal
operating pressure of
Before a new or repaired 50 mg/L
water line is placed into
service, it must be properly
disinfected by providing a
chlorine dosage of
_________ and proper
detention time
Water bearing formations Aquifers
beneath the earths surface
that are used as a source of
water for public water
supplies are