REHS{ Registered Environmental Health Specialist}STUDY
GUIDE – 2025-2026 REGISTERED ENVIRONMENTAL HEALTH
SPECIALIST EXAM PREP WITH 500 VERIFIED QUESTIONS
AND CORRECT ANSWERS WITH MOST TESTED QUESTIONS
Which is not one of the core functions of Environmental Public Health?
A. Assurance
B. Coordination
C. Assessment
D. Policy Development - correct answer -B. Coordination
Monitoring environmental and health status to identify and solve community environmental health
problems is one of the:
A. Core competencies of Environmental Public Health
B. Ten essential services of environmental Public Health
C. Revitalization strategies of environmental Public Health
D. None of the Above - correct answer -B. Ten essential services of environmental Public Health
Which one of the following phrases most accurately describes the term endemic?
A. Sporadic occurrence of an illness
B. Illnesses that exceed expected levels
C. All illnesses present at any one time
D. Constant presence of an illness in a population - correct answer -D. Constant presence of an illness
in a population
The inteval between exposure to an infectious agent and the appearance of the first symptom is called
the:
A. Transmission period
B. Incubation period
C. Susceptible period
D. Reactive period - correct answer -B. Incubation period
,In the states, government authority to regulate for environmental Public Health is based on:
A. The Bill of Rights
B. United States Code of Federal Regulations
C. Police Powers
D. The United States Constitution - correct answer -C. Police Powers
A food establishment known to have an imminent health hazard is not closed by the environmental
public health professional. This is an example of:
A. Nonfeasance
B. Malfeasance
C. Misfeasance
D. Laziness - correct answer -A. Nonfeasance
Campylobacter is mostly associated with:
A. Contaminated water
B. Infected birds
C. Infected ticks
D. Contaminated food - correct answer -D. Contaminated food
A person that harbors a specific infectious agent in the absence of clinical symptoms and can serve as a
potential source of infection is known as a:
A. Contact
B. Pathogen
C. Carrier
D. Toxin - correct answer -C. Carrier
An epidemic is the occurrence in a community or region of cases of illness clearly in excess of
expectancy.
A. True
,B. False - correct answer -A. True
An example of a non-commutable commutable disease is:
A. Diabetes
B. Cholera
C. Influenza
D. Measles - correct answer -A. Diabetes
The environmental health specialist must understand the epidemiological concept of disease process
including host, agent and the environment and their interactions.
A. True
B. False - correct answer -A. True
Inanimate objects that transfer disease organisms are called:
A. Dead
B. Arthropoda
C. Fomites
D. Hormones - correct answer -C. Fomites
The goals of epidemiology do not include:
A. Prosecuting the person or company responsible
B. Determining the cause of the disease or outbreak
C. Preventing future disease or outbreak occurrence
D. None of the above - correct answer -A. Prosecuting the person or company responsible
The best example in this list of agencies where environmental public health can be practiced is:
A. Local law enforcement agencies
B. State drinking water agencies
C. State natural resources agencies
, D. Federal energy regulatory agency - correct answer -B. State drinking water agencies
Environmental public health investigations include:
A. Good observational skills and systematic data collection
B. Personal safety factors
C. Appropriate inspection attire and equipment
D. All of the above - correct answer -D. All of the above
Environmental public health managers ensure readiness of individuals do the agency to respond to
environmental public health threats and enable recovery of public health services with a minimal loss of
public and private health.
A. True
B. False - correct answer -A. True
The capacity to use the environmental public health practitioners' dfrontline role to effectively educate
the public on environmental public health issues is one of the:
A. Ten essential services of environmental public health
B. Revitalization strategies of environmental public health
C. Core competencies of environmental public health
D. Epidemiological investigation techniques - correct answer -C. Core competencies of environmental
public health
Regulation and ____ of food production, recreational waters, and onsite waste water disposal are
examples of environmental public health practitioners' roles and responsibilities
A. Monitoring
B. Promotion
C. Reporting
D. Ensuring - correct answer -A. Monitoring
The environmental public health practitioner must have a thorough understanding of the legal
implications in all areas of decision making, as well as the ____ of the public and of government
GUIDE – 2025-2026 REGISTERED ENVIRONMENTAL HEALTH
SPECIALIST EXAM PREP WITH 500 VERIFIED QUESTIONS
AND CORRECT ANSWERS WITH MOST TESTED QUESTIONS
Which is not one of the core functions of Environmental Public Health?
A. Assurance
B. Coordination
C. Assessment
D. Policy Development - correct answer -B. Coordination
Monitoring environmental and health status to identify and solve community environmental health
problems is one of the:
A. Core competencies of Environmental Public Health
B. Ten essential services of environmental Public Health
C. Revitalization strategies of environmental Public Health
D. None of the Above - correct answer -B. Ten essential services of environmental Public Health
Which one of the following phrases most accurately describes the term endemic?
A. Sporadic occurrence of an illness
B. Illnesses that exceed expected levels
C. All illnesses present at any one time
D. Constant presence of an illness in a population - correct answer -D. Constant presence of an illness
in a population
The inteval between exposure to an infectious agent and the appearance of the first symptom is called
the:
A. Transmission period
B. Incubation period
C. Susceptible period
D. Reactive period - correct answer -B. Incubation period
,In the states, government authority to regulate for environmental Public Health is based on:
A. The Bill of Rights
B. United States Code of Federal Regulations
C. Police Powers
D. The United States Constitution - correct answer -C. Police Powers
A food establishment known to have an imminent health hazard is not closed by the environmental
public health professional. This is an example of:
A. Nonfeasance
B. Malfeasance
C. Misfeasance
D. Laziness - correct answer -A. Nonfeasance
Campylobacter is mostly associated with:
A. Contaminated water
B. Infected birds
C. Infected ticks
D. Contaminated food - correct answer -D. Contaminated food
A person that harbors a specific infectious agent in the absence of clinical symptoms and can serve as a
potential source of infection is known as a:
A. Contact
B. Pathogen
C. Carrier
D. Toxin - correct answer -C. Carrier
An epidemic is the occurrence in a community or region of cases of illness clearly in excess of
expectancy.
A. True
,B. False - correct answer -A. True
An example of a non-commutable commutable disease is:
A. Diabetes
B. Cholera
C. Influenza
D. Measles - correct answer -A. Diabetes
The environmental health specialist must understand the epidemiological concept of disease process
including host, agent and the environment and their interactions.
A. True
B. False - correct answer -A. True
Inanimate objects that transfer disease organisms are called:
A. Dead
B. Arthropoda
C. Fomites
D. Hormones - correct answer -C. Fomites
The goals of epidemiology do not include:
A. Prosecuting the person or company responsible
B. Determining the cause of the disease or outbreak
C. Preventing future disease or outbreak occurrence
D. None of the above - correct answer -A. Prosecuting the person or company responsible
The best example in this list of agencies where environmental public health can be practiced is:
A. Local law enforcement agencies
B. State drinking water agencies
C. State natural resources agencies
, D. Federal energy regulatory agency - correct answer -B. State drinking water agencies
Environmental public health investigations include:
A. Good observational skills and systematic data collection
B. Personal safety factors
C. Appropriate inspection attire and equipment
D. All of the above - correct answer -D. All of the above
Environmental public health managers ensure readiness of individuals do the agency to respond to
environmental public health threats and enable recovery of public health services with a minimal loss of
public and private health.
A. True
B. False - correct answer -A. True
The capacity to use the environmental public health practitioners' dfrontline role to effectively educate
the public on environmental public health issues is one of the:
A. Ten essential services of environmental public health
B. Revitalization strategies of environmental public health
C. Core competencies of environmental public health
D. Epidemiological investigation techniques - correct answer -C. Core competencies of environmental
public health
Regulation and ____ of food production, recreational waters, and onsite waste water disposal are
examples of environmental public health practitioners' roles and responsibilities
A. Monitoring
B. Promotion
C. Reporting
D. Ensuring - correct answer -A. Monitoring
The environmental public health practitioner must have a thorough understanding of the legal
implications in all areas of decision making, as well as the ____ of the public and of government
