1|Page
TCEQ CLASS C WATER OPERATOR LICENSE EXAM LATEST 2025
ACTUAL EXAM WITH COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS (100% VERIFIED ANSWERS) |ALREADY
GRADED A+| ||PROFESSOR VERIFIED|| ||BRANDNEW!!!||
The primary reason for main line failures in the distribution system
is - - ANSWER-- internal and external corrosion
- improper backfill and lack of proper bedding
Check values on the discharge side of a pump are used to- -
ANSWER-Prevent water from flowing back through the pump
when the pump is off
_____________ & ____________ acids are by products of
drinking water - ANSWER-Trinalomethanes, Haloacetic
These are ______ major underground water aquifers in Texas -
ANSWER-7
Most common type of filter in a surface plant is _________ and is
designed to treat and flow at- - ANSWER-Rapid sand and
designed to flow 2 gpm/ft2
,2|Page
Proper backwashing of a sand filter is accomplished when the
filter media expands by _________ % - ANSWER-30-50
After disinfection and flushing of super chlorinated new lines and
service but prior to placing the line into service, bacteriological
samples are required. The current standard is _____________
sample for every __________ feet of line - ANSWER-One sample
every 1.000 feet of line
For cross connection control the TCEQ preferred method is - -
ANSWER-Physical air gap
One microorganism in Water that is resistant to Chlorine is- -
ANSWER-Cryptosporidium
All of the following are common types of water meters except -
ANSWER-Inverted Parshall flume
, 3|Page
A boil-water notice can be triggered by- - ANSWER-- Low
distribution psi
- water outages
- repeated unacceptable bact samples
- failure to maintain good chlorine (Cl2) residual
The maximum safe withdrawal rate of Chlorine for a 150 pound
cylinder is- - ANSWER-40 lbs in 24 hours
When diluting a strong acid always add _______ to ________
rather than the reverse - ANSWER-Acid/Base
Normal oxygen content in the atmosphere is _______% -
ANSWER-20.9
Any atmosphere that is less than ________% oxygen should not
be entered without an approved self-contained breathing
apparatus - ANSWER-19.5
TCEQ CLASS C WATER OPERATOR LICENSE EXAM LATEST 2025
ACTUAL EXAM WITH COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS (100% VERIFIED ANSWERS) |ALREADY
GRADED A+| ||PROFESSOR VERIFIED|| ||BRANDNEW!!!||
The primary reason for main line failures in the distribution system
is - - ANSWER-- internal and external corrosion
- improper backfill and lack of proper bedding
Check values on the discharge side of a pump are used to- -
ANSWER-Prevent water from flowing back through the pump
when the pump is off
_____________ & ____________ acids are by products of
drinking water - ANSWER-Trinalomethanes, Haloacetic
These are ______ major underground water aquifers in Texas -
ANSWER-7
Most common type of filter in a surface plant is _________ and is
designed to treat and flow at- - ANSWER-Rapid sand and
designed to flow 2 gpm/ft2
,2|Page
Proper backwashing of a sand filter is accomplished when the
filter media expands by _________ % - ANSWER-30-50
After disinfection and flushing of super chlorinated new lines and
service but prior to placing the line into service, bacteriological
samples are required. The current standard is _____________
sample for every __________ feet of line - ANSWER-One sample
every 1.000 feet of line
For cross connection control the TCEQ preferred method is - -
ANSWER-Physical air gap
One microorganism in Water that is resistant to Chlorine is- -
ANSWER-Cryptosporidium
All of the following are common types of water meters except -
ANSWER-Inverted Parshall flume
, 3|Page
A boil-water notice can be triggered by- - ANSWER-- Low
distribution psi
- water outages
- repeated unacceptable bact samples
- failure to maintain good chlorine (Cl2) residual
The maximum safe withdrawal rate of Chlorine for a 150 pound
cylinder is- - ANSWER-40 lbs in 24 hours
When diluting a strong acid always add _______ to ________
rather than the reverse - ANSWER-Acid/Base
Normal oxygen content in the atmosphere is _______% -
ANSWER-20.9
Any atmosphere that is less than ________% oxygen should not
be entered without an approved self-contained breathing
apparatus - ANSWER-19.5
