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ILLINOIS CLASS D WATER LICENSE NEWEST 2025
ACTUAL EXAM COMPLETE 150 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||BRAND
NEW VERSION!!
Operators have a responsibility to provide drinking
water that meets federal and state
standards. (true/false) - .....ANSWER ...✔✔ true
Water must be disinfected, delivered at inadequate
pressure, and be ample in quantity. (true/false) -
.....ANSWER ...✔✔ false (adequate pressure)
Utility employees should guard the water supply and
facilities from contamination, public
tours, and even terrorism. (true/false) - .....ANSWER
...✔✔ false (public tours)
The state requires bacteriological sample results be kept
_____ years. - .....ANSWER ...✔✔ 5 years
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The state requires chemical analysis be kept at least
_____ years. - .....ANSWER ...✔✔ 10 years
EPA requires a water system to keep a copy of each
consumer confidence report at least _____
years. - .....ANSWER ...✔✔ 5 years
A public water system provides the public with piped
water for human consumption, serves
at least _____ service connections, and regularly serves
at least _____ individuals daily at least _____
days out of the year. - .....ANSWER ...✔✔ 15 service
connections
25 individuals
60 days out of the year
The water utility field affects everyone because _____.
- .....ANSWER ...✔✔ water is essential to life and
health
The water utility employee should remember customers
are entitled to _____ and _____. - .....ANSWER
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...✔✔ courteous treatment and answers to questions
about water
In Texas, water operator licensing is administered by the
_____. - .....ANSWER ...✔✔ TCEQ
All public water systems are required to employ licensed
operators even if the system only
_____ treated water bought from another source. -
.....ANSWER ...✔✔ redistributes treated water
Public water systems include cities, municipal utility
districts, rural water supply
corporations, mobile home parks, and _____. -
.....ANSWER ...✔✔ campgrounds
Examples of community water systems include ________.
a. municipalities
b. municipal utility districts
c. rural water supply corporations
d. mobile home parks
e. all the above - .....ANSWER ...✔✔ e. all of the
above
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A federal agency impacting the water utility industry is
the _____. - .....ANSWER ...✔✔ EPA
The most important federal law impacting the water
utility industry is the _____. - .....ANSWER ...✔✔ Safe
Drinking Water Act (PL93-523)
The four national safety and quality standards for
drinking water covered in the Safe
Drinking Water Act are physical, chemical, ________
and radiological. - .....ANSWER ...✔✔ bacteriological
The state agency that regulates drinking water in Texas
and administers the federal Safe
Drinking Water Act is the ________. - .....ANSWER
...✔✔ TCEQ
Water utility system personnel are required to notify the
TCEQ of changes or alterations of
the system, a new facility to be built, and water supply
________. - .....ANSWER ...✔✔ health hazards
ILLINOIS CLASS D WATER LICENSE NEWEST 2025
ACTUAL EXAM COMPLETE 150 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||BRAND
NEW VERSION!!
Operators have a responsibility to provide drinking
water that meets federal and state
standards. (true/false) - .....ANSWER ...✔✔ true
Water must be disinfected, delivered at inadequate
pressure, and be ample in quantity. (true/false) -
.....ANSWER ...✔✔ false (adequate pressure)
Utility employees should guard the water supply and
facilities from contamination, public
tours, and even terrorism. (true/false) - .....ANSWER
...✔✔ false (public tours)
The state requires bacteriological sample results be kept
_____ years. - .....ANSWER ...✔✔ 5 years
,2|Page
The state requires chemical analysis be kept at least
_____ years. - .....ANSWER ...✔✔ 10 years
EPA requires a water system to keep a copy of each
consumer confidence report at least _____
years. - .....ANSWER ...✔✔ 5 years
A public water system provides the public with piped
water for human consumption, serves
at least _____ service connections, and regularly serves
at least _____ individuals daily at least _____
days out of the year. - .....ANSWER ...✔✔ 15 service
connections
25 individuals
60 days out of the year
The water utility field affects everyone because _____.
- .....ANSWER ...✔✔ water is essential to life and
health
The water utility employee should remember customers
are entitled to _____ and _____. - .....ANSWER
,3|Page
...✔✔ courteous treatment and answers to questions
about water
In Texas, water operator licensing is administered by the
_____. - .....ANSWER ...✔✔ TCEQ
All public water systems are required to employ licensed
operators even if the system only
_____ treated water bought from another source. -
.....ANSWER ...✔✔ redistributes treated water
Public water systems include cities, municipal utility
districts, rural water supply
corporations, mobile home parks, and _____. -
.....ANSWER ...✔✔ campgrounds
Examples of community water systems include ________.
a. municipalities
b. municipal utility districts
c. rural water supply corporations
d. mobile home parks
e. all the above - .....ANSWER ...✔✔ e. all of the
above
, 4|Page
A federal agency impacting the water utility industry is
the _____. - .....ANSWER ...✔✔ EPA
The most important federal law impacting the water
utility industry is the _____. - .....ANSWER ...✔✔ Safe
Drinking Water Act (PL93-523)
The four national safety and quality standards for
drinking water covered in the Safe
Drinking Water Act are physical, chemical, ________
and radiological. - .....ANSWER ...✔✔ bacteriological
The state agency that regulates drinking water in Texas
and administers the federal Safe
Drinking Water Act is the ________. - .....ANSWER
...✔✔ TCEQ
Water utility system personnel are required to notify the
TCEQ of changes or alterations of
the system, a new facility to be built, and water supply
________. - .....ANSWER ...✔✔ health hazards
