Practice Certification Exam for Water
Treatment Exam Questions and
Answers 100% Pass
If a consumer complains about the drinking water characteristics, the operator
should record the complaint and - ANSWER-Investigate immediately.
What term is used when a water utility divides its total operating expenses into the
total revenue? - ANSWER-Operating ratio
How often should operating data, such as flow rate, amount of water treated,
dosage of chemical, and reservoir levels be recorded? - ANSWER-Daily
Which of the following is the most important reason to keep daily records of
operational data? - ANSWER-Document that safe drinking water has been
delivered to customers
Under the requirements of the Safe Drinking Water Act, it is the duty of the water
purveyor to deliver potable water of proper quantity only as far as the - ANSWER-
Consumer's tap inside the home.
According to the Safe Drinking Water Act, the basic definition of a public water
supply system is any water system that supplies water for human consumption that
©️COPYRIGHT 2025, ALL RIGHTS RESERVED. 1
, serves - ANSWER-15 service connections or over 25 persons for over 60 days a
year.
What agent is responsible for for reporting lab results to the regulatory agency? -
ANSWER-Water system owner
According to the USEPA drinking water regulations, the owner or operator of a
public water system which fails to comply with applicable monitoring requirements
must give notice to the public within - ANSWER-3 months of the violation in a
daily newspaper in the area served by the system.
What federal law is designed to protect the safety and health of operators? -
ANSWER-OSHA
What federal law regulates public water supplies? - ANSWER-Safe Drinking Water
Act
What causes water to move through pores in soil and rocks? - ANSWER-Gravity
What is commonly used indicator of possible health problems found in plants, soil,
water and the intestines of humans and warm-blooded animals? - ANSWER-
Coliform bacteria
What are disease producing bacteria called? - ANSWER-Pathogenic
What are the two main causes of hardness in water? - ANSWER-Calcium and
Magnesium
©️COPYRIGHT 2025, ALL RIGHTS RESERVED. 2
Treatment Exam Questions and
Answers 100% Pass
If a consumer complains about the drinking water characteristics, the operator
should record the complaint and - ANSWER-Investigate immediately.
What term is used when a water utility divides its total operating expenses into the
total revenue? - ANSWER-Operating ratio
How often should operating data, such as flow rate, amount of water treated,
dosage of chemical, and reservoir levels be recorded? - ANSWER-Daily
Which of the following is the most important reason to keep daily records of
operational data? - ANSWER-Document that safe drinking water has been
delivered to customers
Under the requirements of the Safe Drinking Water Act, it is the duty of the water
purveyor to deliver potable water of proper quantity only as far as the - ANSWER-
Consumer's tap inside the home.
According to the Safe Drinking Water Act, the basic definition of a public water
supply system is any water system that supplies water for human consumption that
©️COPYRIGHT 2025, ALL RIGHTS RESERVED. 1
, serves - ANSWER-15 service connections or over 25 persons for over 60 days a
year.
What agent is responsible for for reporting lab results to the regulatory agency? -
ANSWER-Water system owner
According to the USEPA drinking water regulations, the owner or operator of a
public water system which fails to comply with applicable monitoring requirements
must give notice to the public within - ANSWER-3 months of the violation in a
daily newspaper in the area served by the system.
What federal law is designed to protect the safety and health of operators? -
ANSWER-OSHA
What federal law regulates public water supplies? - ANSWER-Safe Drinking Water
Act
What causes water to move through pores in soil and rocks? - ANSWER-Gravity
What is commonly used indicator of possible health problems found in plants, soil,
water and the intestines of humans and warm-blooded animals? - ANSWER-
Coliform bacteria
What are disease producing bacteria called? - ANSWER-Pathogenic
What are the two main causes of hardness in water? - ANSWER-Calcium and
Magnesium
©️COPYRIGHT 2025, ALL RIGHTS RESERVED. 2
