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TCEQ CLASS A PREP PART 1
EXAM QUESTIONS AND A NSWERS
Question : In Texas, water operator licensing is
administer by the?
CORRECT ANSWER : TCEQ
Question : Which minerals cause hardness in water
CORRECT ANSWER : magnesium and calcium
Question : the most importan federal law impacting the
water utility industry is
CORRECT ANSWER : Safe Drinking Water Act
Question : The four water quality standards established
for drinking water in the Safe Drinking Water Act are chemical, bacteriological,radiological and
CORRECT ANSWER : chemical,
bacteriological,radiological and physical.
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Question : The minimue allowable pressure in the
distribution system under emergency conditions is
CORRECT ANSWER : 20 psi
Question : Water vapor given off by plants and trees is
know as
CORRECT ANSWER : tranpiration
Question : organic matter includes
CORRECT ANSWER : wood,dogs,algae,bacteria
Question : The single most important water treatment
process is
CORRECT ANSWER : disinfection
Question : excessive nitrates in drinking water can cause
what syndrom in infants
CORRECT ANSWER : blue baby
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Question : A sanitary control easement must cover land
within how many feet of a public water well
CORRECT ANSWER : 150 feet
Question : A sample for physical and chemical analysis of
a new well must be taken after how many hours of continuous pumping
CORRECT ANSWER : 36 hours
Question : Chapter 290 Rules and Regulations requries
chemical analysis of water supplies every
CORRECT ANSWER : year
Question : Detention time in sedimetation basins must be
at least how many hours to allow floc to settle
CORRECT ANSWER: six
Question : backwashing should expand the filter media by
CORRECT ANSWER : 30 to 50 percent
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Question : In Texas, all public water systems are required
to have what facilities
CORRECT ANSWER : chlorination
Question : The MCL for Trihalomethanes in drinking
water is
CORRECT ANSWER : 0.080 mg/l
Question : At room temperatures chlorine gas is
CORRECT ANSWER : greenish-yellow , has pungent
odor, and is 2.5 heaver then air
Question : Disease that may be spread by inadequately
disinfected water are
CORRECT ANSWER : typhoid, cholera, infectious
hepatitis, legionnaires disease.
Question : minimum chlorine residuals of free and toral in
the far reaches of the distribution system is