INDIANA WATER OPERATOR CERTIFICATION
EXAM TESTBANK 2025/REAL 800+ QUESTIONS & CORRECT
DETAILED ANSWERS/INDIANA WATER OPERATOR
CERTIFICATION EXAM 2024-2025/ALREADY GRADED A+
The Safe Drinking Water Act was adopted in 1974 to protect? CORRECT
ANS:- - Both ground and surface drinking water
EPA allows the State of Indiana to administer and enforce drinking water
regulations because:
A. Indiana has applied for Primacy from EPA
B. Indiana has been granted Primacy by EPA
C. Indiana's regulations are at least as stringent as federal regulations
D. All of the above CORRECT ANS:- - D. All of the above
A factory provides drinking water from its well for 35 employees Monday
through Friday most weeks of the year. What kind of public water supply is it?
A. Community
B. Non-community
C. Non-transient Non-community
D. None of the above CORRECT ANS:- - C. Non-transient Non-community
A community of 1,500 people pumps water directly from 2 wells into a 25,000-
gallon standpipe. How would IDEM classify the distribution system?
A. DSS
,B. DSM
C. DSL
D. WT-6 CORRECT ANS:- - A. DSS
A community of 1,500 people pumps water directly from 2 wells into a 25,000-
gallon stand pipe decides to add Chlorine for disinfection of its water. How
would IDEM classify the water treatment system?
A. WT1
B. WT2
C. WT5
D. DSS CORRECT ANS:- - B. WT2
How does an operator become an operator-in-responsible-charge?
A. The operator petitions the Commissioner of IDEM
B. The operator is designated by the owner or governing body of a
water treatment plant or water distribution system
C. The operator is appointed by the IDEM field inspector
D. None of the above CORRECT ANS:- B. The operator is designated by
the owner or governing body of a water treatment plant or water distribution
system
An Operator-in-Training (OIT) may serve as operator in responsible charge.
A. True
B. False CORRECT ANS:- - B. False
A grandparented operator must fulfill the same continuing education
requirements as an operator who has received certification by examination.
A. True
B. False CORRECT ANS:- - A. True
,Wellhead protection is mandatory for which type of public water system?
A. Community
B. Noncommunity
C. Both of the above
D. None of the above CORRECT ANS:- - A. Community
IDEM will issue a Notice of Violation if a water system operator, or other
official, contacts the agency too frequently.
A. True
B. False CORRECT ANS:- - B. False
What is the minimum number of coliform samples all water systems must
collect each month?
A. 1
B. 2
C. 3
D. 4 CORRECT ANS:- - A. 1
A foot of head (water height) produces how many pounds per square inch of
pressure?
A. .4333
B. 2.574
C. 3.141
D. 5.333 CORRECT ANS:- - A. .4333
Pressure tanks should be sized to avoid excessive pump cycling.
, A. True
B. False CORRECT ANS:- - A. True
What is a cross connection?
A. The process of connecting a hose to the large port of a fire hydrant
B. Use of an electrically-powered tool in a moist environment
C. Failure to turn off the power to a well when repacking a gland
D. An actual or potential connection between a public water supply and
a source of contamination or pollution
CORRECT ANS:- - D. An actual or potential connection between a public
water supply and a source of contamination or pollution
Under the Lead and Copper Rule, what percentage of tested water services must
be below 0.015 Mg/l Lead (Pb)?
A. 60%
B. 70%
C. 80%
D. 90% CORRECT ANS:- - D. 90%
What does "first draw" mean when collecting lead and copper samples?
A. Taking a sample after the water has been in contact with the plumbing
for at least 6 hours
B. Drawing a water sample from the faucet nearest the water meter
C. Carrying the sample bottle in a leather holster affixed to the technician's belt
D. None of the above CORRECT ANS:- - A. Taking a sample after the water
has been in contact with the plumbing for at least 6 hours
EXAM TESTBANK 2025/REAL 800+ QUESTIONS & CORRECT
DETAILED ANSWERS/INDIANA WATER OPERATOR
CERTIFICATION EXAM 2024-2025/ALREADY GRADED A+
The Safe Drinking Water Act was adopted in 1974 to protect? CORRECT
ANS:- - Both ground and surface drinking water
EPA allows the State of Indiana to administer and enforce drinking water
regulations because:
A. Indiana has applied for Primacy from EPA
B. Indiana has been granted Primacy by EPA
C. Indiana's regulations are at least as stringent as federal regulations
D. All of the above CORRECT ANS:- - D. All of the above
A factory provides drinking water from its well for 35 employees Monday
through Friday most weeks of the year. What kind of public water supply is it?
A. Community
B. Non-community
C. Non-transient Non-community
D. None of the above CORRECT ANS:- - C. Non-transient Non-community
A community of 1,500 people pumps water directly from 2 wells into a 25,000-
gallon standpipe. How would IDEM classify the distribution system?
A. DSS
,B. DSM
C. DSL
D. WT-6 CORRECT ANS:- - A. DSS
A community of 1,500 people pumps water directly from 2 wells into a 25,000-
gallon stand pipe decides to add Chlorine for disinfection of its water. How
would IDEM classify the water treatment system?
A. WT1
B. WT2
C. WT5
D. DSS CORRECT ANS:- - B. WT2
How does an operator become an operator-in-responsible-charge?
A. The operator petitions the Commissioner of IDEM
B. The operator is designated by the owner or governing body of a
water treatment plant or water distribution system
C. The operator is appointed by the IDEM field inspector
D. None of the above CORRECT ANS:- B. The operator is designated by
the owner or governing body of a water treatment plant or water distribution
system
An Operator-in-Training (OIT) may serve as operator in responsible charge.
A. True
B. False CORRECT ANS:- - B. False
A grandparented operator must fulfill the same continuing education
requirements as an operator who has received certification by examination.
A. True
B. False CORRECT ANS:- - A. True
,Wellhead protection is mandatory for which type of public water system?
A. Community
B. Noncommunity
C. Both of the above
D. None of the above CORRECT ANS:- - A. Community
IDEM will issue a Notice of Violation if a water system operator, or other
official, contacts the agency too frequently.
A. True
B. False CORRECT ANS:- - B. False
What is the minimum number of coliform samples all water systems must
collect each month?
A. 1
B. 2
C. 3
D. 4 CORRECT ANS:- - A. 1
A foot of head (water height) produces how many pounds per square inch of
pressure?
A. .4333
B. 2.574
C. 3.141
D. 5.333 CORRECT ANS:- - A. .4333
Pressure tanks should be sized to avoid excessive pump cycling.
, A. True
B. False CORRECT ANS:- - A. True
What is a cross connection?
A. The process of connecting a hose to the large port of a fire hydrant
B. Use of an electrically-powered tool in a moist environment
C. Failure to turn off the power to a well when repacking a gland
D. An actual or potential connection between a public water supply and
a source of contamination or pollution
CORRECT ANS:- - D. An actual or potential connection between a public
water supply and a source of contamination or pollution
Under the Lead and Copper Rule, what percentage of tested water services must
be below 0.015 Mg/l Lead (Pb)?
A. 60%
B. 70%
C. 80%
D. 90% CORRECT ANS:- - D. 90%
What does "first draw" mean when collecting lead and copper samples?
A. Taking a sample after the water has been in contact with the plumbing
for at least 6 hours
B. Drawing a water sample from the faucet nearest the water meter
C. Carrying the sample bottle in a leather holster affixed to the technician's belt
D. None of the above CORRECT ANS:- - A. Taking a sample after the water
has been in contact with the plumbing for at least 6 hours
