Water Operator Class D Study Guide
Exam 2026 Questions and Answers
The primary purpose of the Water Utility Industry - Correct answer-The production
and delivery of safe drinking water to consumers
Those who work in the public water industry have a responsibility to meet
standards created by these types of government entities. - Correct answer-Federal
and State
basic federal and state standards state that Water must be: - Correct answer-
disinfected, delivered at adequate pressure, and be ample in quantity.
Employees should guard what - Correct answer-the water supply and facilities
Employees should guard the water supply and facilities from these three things. -
Correct answer-contamination, vandalism and terrorism
Bacteriological analysis records are kept for - Correct answer-5 years
Chemical analysis records are kept for - Correct answer-10 years
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,Records about action taken to correct violations of primary drinking water
regulations are kept for - Correct answer-3 years after last action taken
Written documentation relating to sanitary surveys conducted are kept for - Correct
answer-10 years after the survey is completed
Documentation of a variance or exemption granted is kept for - Correct answer-5
years after its expiration
Results of required tests, measurements or analysis must be reported - Correct
answer-within 10 days following its completion
A copy of Consumer Confidence reports (EPA Required)must be kept for - Correct
answer-5 years
Administers water operator licensing - Correct answer-TCEQ
TCEQ - Correct answer-Texas Commission on Environmental Quality
Description of a public water system - Correct answer-Regularly serves at least 25
individuals daily at least 60 days out of the year.Services at least 15 service
connections.
MUDs - Correct answer-Municipal Utility Districts
Water is essential to - Correct answer-Life and health
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,Customers are entitled to - Correct answer-courteous treatment & answers to
questions about water
This type of public system is not required to compile monthly reports - Correct
answer-systems that serve less than 100 connections OR purchase treated water
Job training for water utility operators is available through these 3 organizations -
Correct answer-American Water Works Association, Texas Engineering Extension
Service, Texas Water Utilities Association
All public water systems are required to employ certified operators even if the
system only - Correct answer-redistributes treated water bought from another
source
cities, municipal utility districts,rural water supply corporations mobile home
parks, campgrounds are examples of: - Correct answer-Public Water Systems
Examples of community water systems - Correct answer-cities, municipal utility
districts,rural water supply corporations, mobile home parks, campgrounds
Non-community water system - Correct answer-Any public water system that is
not a community system
travel trailer spaces, Hotel and motel rooms, service stations are examples of this
type of water systems - Correct answer-non-community water systems
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
, The federal agency that impacts the water industry - Correct answer-EPA
EPA - Correct answer-Environmental Protection Agency
The most important federal law impacting the water utility industry is the - Correct
answer-Safe Drinking Water Act
The Safe Drinking Water Act establishes these 4 national safety and quality
standards - Correct answer-Physical, Chemical, Bacteriological, Radiological
The state agency that regulated drinking water in Texas and administers the Federal
Safe Drinking Water Act - Correct answer-TCEQ
The water system must notify the TCEQ when (5 items) - Correct answer-there is a
change or alteration of the system; a new facility to be build; water supply health
hazards; change in water quality; change in water source
MUDs; Rural Water Supply Corporations; Drainage Districts; Ground Water
Conservation Districts; Subsidence Districts and River Authorities -- These are
what type of agencies and what do they impact? - Correct answer-Regional and
local agencies that impact the water utility industry
The relationship between you and the customer - Correct answer-Public Relations
PR - Correct answer-Public Relations
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
Exam 2026 Questions and Answers
The primary purpose of the Water Utility Industry - Correct answer-The production
and delivery of safe drinking water to consumers
Those who work in the public water industry have a responsibility to meet
standards created by these types of government entities. - Correct answer-Federal
and State
basic federal and state standards state that Water must be: - Correct answer-
disinfected, delivered at adequate pressure, and be ample in quantity.
Employees should guard what - Correct answer-the water supply and facilities
Employees should guard the water supply and facilities from these three things. -
Correct answer-contamination, vandalism and terrorism
Bacteriological analysis records are kept for - Correct answer-5 years
Chemical analysis records are kept for - Correct answer-10 years
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,Records about action taken to correct violations of primary drinking water
regulations are kept for - Correct answer-3 years after last action taken
Written documentation relating to sanitary surveys conducted are kept for - Correct
answer-10 years after the survey is completed
Documentation of a variance or exemption granted is kept for - Correct answer-5
years after its expiration
Results of required tests, measurements or analysis must be reported - Correct
answer-within 10 days following its completion
A copy of Consumer Confidence reports (EPA Required)must be kept for - Correct
answer-5 years
Administers water operator licensing - Correct answer-TCEQ
TCEQ - Correct answer-Texas Commission on Environmental Quality
Description of a public water system - Correct answer-Regularly serves at least 25
individuals daily at least 60 days out of the year.Services at least 15 service
connections.
MUDs - Correct answer-Municipal Utility Districts
Water is essential to - Correct answer-Life and health
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
,Customers are entitled to - Correct answer-courteous treatment & answers to
questions about water
This type of public system is not required to compile monthly reports - Correct
answer-systems that serve less than 100 connections OR purchase treated water
Job training for water utility operators is available through these 3 organizations -
Correct answer-American Water Works Association, Texas Engineering Extension
Service, Texas Water Utilities Association
All public water systems are required to employ certified operators even if the
system only - Correct answer-redistributes treated water bought from another
source
cities, municipal utility districts,rural water supply corporations mobile home
parks, campgrounds are examples of: - Correct answer-Public Water Systems
Examples of community water systems - Correct answer-cities, municipal utility
districts,rural water supply corporations, mobile home parks, campgrounds
Non-community water system - Correct answer-Any public water system that is
not a community system
travel trailer spaces, Hotel and motel rooms, service stations are examples of this
type of water systems - Correct answer-non-community water systems
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
, The federal agency that impacts the water industry - Correct answer-EPA
EPA - Correct answer-Environmental Protection Agency
The most important federal law impacting the water utility industry is the - Correct
answer-Safe Drinking Water Act
The Safe Drinking Water Act establishes these 4 national safety and quality
standards - Correct answer-Physical, Chemical, Bacteriological, Radiological
The state agency that regulated drinking water in Texas and administers the Federal
Safe Drinking Water Act - Correct answer-TCEQ
The water system must notify the TCEQ when (5 items) - Correct answer-there is a
change or alteration of the system; a new facility to be build; water supply health
hazards; change in water quality; change in water source
MUDs; Rural Water Supply Corporations; Drainage Districts; Ground Water
Conservation Districts; Subsidence Districts and River Authorities -- These are
what type of agencies and what do they impact? - Correct answer-Regional and
local agencies that impact the water utility industry
The relationship between you and the customer - Correct answer-Public Relations
PR - Correct answer-Public Relations
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
