CLASS A WATER OPERATOR EXAM SCRIPT 2025/2026
QUESTIONS WITH SOLUTIONS RATED A+
✔✔MF (Membrane filter) test - ✔✔Sometimes used to measure the total coliform and
fecal coliform of water. Water is filtered and the coliform is then grown into colonies and
counted to determine concentration in the initial sample.
✔✔Maximum time between sample collection and analysis for bac-t - ✔✔30 hours but
operators are encouraged to submit samples within 24 hours to be safe.
✔✔Where can samples be collected for bac-t - ✔✔only from sites listed on the Pre-
approved site sampling plan.
✔✔Ch 2 -The organisms used as an indicator of microbiological contamination are -
✔✔Coliform bacteria
✔✔Ch 2- The substance CaCO3 in water will contribute to the - ✔✔total alkalinity and
carbonate hardness
✔✔Ch 2 - The chemical preservative normally used for water samples that are to be
tested for metals is - ✔✔HNO3
✔✔Ch 2 - The primary concern when a treated water exceed the MCL for turbidity is
that - ✔✔The turbidity may harbor pathogenic organisms preventing proper disinfection
✔✔When must an operator be certified - ✔✔within 10 days of employment or
appointment as an operator
✔✔An Operator is - ✔✔a person who performs work on, or determines the method of
working on, water works or who changes water quality either directly or by order. This
includes a person who sets or removes meters, makes service connections, or repairs
lines.
✔✔Water Works - ✔✔all facilities used in the procurement, treatment, storage,
pumping, or distribution of water for human consumption.
✔✔Superintendent - ✔✔the operator in direct responsible charge of an entire plant or
distribution system. This is true even if other official titles are sometimes assigned by
employers
✔✔Operator Certification Unit - ✔✔(1500 or less = D) (1500 - 15000 = C) (15000-50000
= B) (>50000 = A) All surface water systems must be operated by a Superintendent with
at least a class C certification for populations less than 15000
, ✔✔Public Water Supply Operation (Chap 631) - ✔✔Regulations for actual operation of
public water supply system. this includes sampling, monitoring, reporting, and public
notice requirements for water supplies.Implemented by the Water Quality Division of
ODEQ.
✔✔Public Water Supply Construction Standard (Chap 626) - ✔✔Standards for the
construciotn or modification of the physical system of public water supply systems. This
document is also implemented by the Water Quality Division of ODEQ
✔✔Rules for Oklahoma Hazard Communication Standard - ✔✔Rules regarding the
transmission of necessary information to employees about the properties and potential
hazards of hazardous substances in the workplace. Enforced by the Public Employees
Health and Safety Division of the Oklahoma State Department of Labor.
✔✔Monthly Operations Report (MOR) - ✔✔A complete record of most of the major
factors involved in plant operations for each day of the month. It is the Superintendent's
responsibility to ensure MOR is kept up to date and accurate. Original MOR must be
submitted by the 10th day of the following month to the DEQ Water Quality Division. A
second copy must be kept at the facilityh for at least 10 years.
✔✔Falsification of Records - ✔✔Punishable by loss of certification, fine of up to 25,000
per violation and 1 year in jail.
✔✔CH 3 - Records at water systems must be kept for - ✔✔10 years
✔✔Ch 3 - The superintendent of a water system treating surface water for a community
of 550 persons must hold at least - ✔✔Class C certification
✔✔Ch 3 - If the Utilities Director selects which chemicals and what must be used in the
community water system, he or she - ✔✔Must be certified at the same level required of
the superintendent
✔✔Ch 3 - Which of the following requirements is primarily concerned with keeping a
permanent, unalterable record of laboratory data? - ✔✔A bound volume must be kept
for records of the test results, date, time, and signature of analyst.
✔✔Nutrients - ✔✔Nitrate, phosphate, and other compounds. They are often responsible
for water quality problems associated with surface water supplies.
✔✔Algae bloom - ✔✔Sudden increase in algae populations in surface water sources.
the most common water quality problems associated with surface water supply systems
can be traced directly back to algal blooms.
✔✔Quality Problems associated with Algae blooms - ✔✔1. taste and odor problems
QUESTIONS WITH SOLUTIONS RATED A+
✔✔MF (Membrane filter) test - ✔✔Sometimes used to measure the total coliform and
fecal coliform of water. Water is filtered and the coliform is then grown into colonies and
counted to determine concentration in the initial sample.
✔✔Maximum time between sample collection and analysis for bac-t - ✔✔30 hours but
operators are encouraged to submit samples within 24 hours to be safe.
✔✔Where can samples be collected for bac-t - ✔✔only from sites listed on the Pre-
approved site sampling plan.
✔✔Ch 2 -The organisms used as an indicator of microbiological contamination are -
✔✔Coliform bacteria
✔✔Ch 2- The substance CaCO3 in water will contribute to the - ✔✔total alkalinity and
carbonate hardness
✔✔Ch 2 - The chemical preservative normally used for water samples that are to be
tested for metals is - ✔✔HNO3
✔✔Ch 2 - The primary concern when a treated water exceed the MCL for turbidity is
that - ✔✔The turbidity may harbor pathogenic organisms preventing proper disinfection
✔✔When must an operator be certified - ✔✔within 10 days of employment or
appointment as an operator
✔✔An Operator is - ✔✔a person who performs work on, or determines the method of
working on, water works or who changes water quality either directly or by order. This
includes a person who sets or removes meters, makes service connections, or repairs
lines.
✔✔Water Works - ✔✔all facilities used in the procurement, treatment, storage,
pumping, or distribution of water for human consumption.
✔✔Superintendent - ✔✔the operator in direct responsible charge of an entire plant or
distribution system. This is true even if other official titles are sometimes assigned by
employers
✔✔Operator Certification Unit - ✔✔(1500 or less = D) (1500 - 15000 = C) (15000-50000
= B) (>50000 = A) All surface water systems must be operated by a Superintendent with
at least a class C certification for populations less than 15000
, ✔✔Public Water Supply Operation (Chap 631) - ✔✔Regulations for actual operation of
public water supply system. this includes sampling, monitoring, reporting, and public
notice requirements for water supplies.Implemented by the Water Quality Division of
ODEQ.
✔✔Public Water Supply Construction Standard (Chap 626) - ✔✔Standards for the
construciotn or modification of the physical system of public water supply systems. This
document is also implemented by the Water Quality Division of ODEQ
✔✔Rules for Oklahoma Hazard Communication Standard - ✔✔Rules regarding the
transmission of necessary information to employees about the properties and potential
hazards of hazardous substances in the workplace. Enforced by the Public Employees
Health and Safety Division of the Oklahoma State Department of Labor.
✔✔Monthly Operations Report (MOR) - ✔✔A complete record of most of the major
factors involved in plant operations for each day of the month. It is the Superintendent's
responsibility to ensure MOR is kept up to date and accurate. Original MOR must be
submitted by the 10th day of the following month to the DEQ Water Quality Division. A
second copy must be kept at the facilityh for at least 10 years.
✔✔Falsification of Records - ✔✔Punishable by loss of certification, fine of up to 25,000
per violation and 1 year in jail.
✔✔CH 3 - Records at water systems must be kept for - ✔✔10 years
✔✔Ch 3 - The superintendent of a water system treating surface water for a community
of 550 persons must hold at least - ✔✔Class C certification
✔✔Ch 3 - If the Utilities Director selects which chemicals and what must be used in the
community water system, he or she - ✔✔Must be certified at the same level required of
the superintendent
✔✔Ch 3 - Which of the following requirements is primarily concerned with keeping a
permanent, unalterable record of laboratory data? - ✔✔A bound volume must be kept
for records of the test results, date, time, and signature of analyst.
✔✔Nutrients - ✔✔Nitrate, phosphate, and other compounds. They are often responsible
for water quality problems associated with surface water supplies.
✔✔Algae bloom - ✔✔Sudden increase in algae populations in surface water sources.
the most common water quality problems associated with surface water supply systems
can be traced directly back to algal blooms.
✔✔Quality Problems associated with Algae blooms - ✔✔1. taste and odor problems
