ENVIRONMENTAL HEALTHY SPECIALIST LICENSING EXAMINER EXAM
QUESTIONS AND ANSWERS (VERIFIED ANSWERS) PLUS RATIONALE
2025/2026 Q&A/ INSTANDOWNLOAD PDF
1. Which of the following best defines environmental health?
A. The study of human diseases
B. The control of environmental factors that can affect health
C. The analysis of social behavior
D. The study of mental health
Correct answer: B – Environmental health focuses on identifying, evaluating, and controlling
physical, chemical, and biological factors in the environment that affect human health.
2. Which agency primarily enforces air quality standards in the U.S.?
A. CDC
B. FDA
C. EPA
D. OSHA
Correct answer: C – The Environmental Protection Agency (EPA) enforces the Clean Air Act
and sets national air quality standards.
3. The Safe Drinking Water Act (SDWA) regulates:
A. Private well water
B. Public drinking water supplies
C. Ocean water
D. Stormwater drainage
Correct answer: B – SDWA covers all public water systems to ensure safe and clean drinking
water.
4. Which of the following is a vector-borne disease?
A. Influenza
B. Cholera
C. Malaria
D. Hepatitis B
Correct answer: C – Malaria is transmitted by the Anopheles mosquito, making it vector-borne.
,5. The main goal of solid waste management is:
A. Waste generation
B. Minimization, reuse, and recycling
C. Landfilling only
D. Increasing incineration
Correct answer: B – Proper waste management aims to reduce waste generation through reuse
and recycling before final disposal.
6. Foodborne illness can be prevented by maintaining hot food at:
A. 100°F
B. 120°F
C. 135°F or higher
D. 90°F
Correct answer: C – Hot foods must be held at 135°F (57°C) or above to prevent bacterial
growth.
7. The presence of coliform bacteria in water indicates:
A. Water hardness
B. Fecal contamination
C. Chemical pollution
D. Chlorine excess
Correct answer: B – Coliforms are indicator organisms for fecal contamination and potential
pathogens.
8. Which pest is most associated with transmission of plague?
A. Housefly
B. Tick
C. Flea
D. Mosquito
Correct answer: C – Plague is transmitted to humans through the bite of infected fleas.
9. The main cause of indoor air pollution in poorly ventilated homes is:
A. Ozone
B. Radon and combustion gases
C. Ultraviolet light
D. High humidity
Correct answer: B – Radon gas and combustion by-products like CO and particulate matter are
major indoor pollutants.
, 10. Which radiation type penetrates deeply into the body and requires lead shielding?
A. Alpha
B. Beta
C. Gamma
D. Ultraviolet
Correct answer: C – Gamma radiation is highly penetrating and requires dense materials like
lead for protection.
11. The Hazard Analysis and Critical Control Point (HACCP) system focuses on:
A. Product marketing
B. Preventing food contamination through process control
C. Food labeling
D. Waste disposal
Correct answer: B – HACCP is a preventive system that identifies and controls potential hazards
in food production.
12. Which of the following is NOT a waterborne disease?
A. Typhoid fever
B. Cholera
C. Dysentery
D. Tuberculosis
Correct answer: D – Tuberculosis is airborne, not waterborne.
13. Noise levels above what decibel can cause hearing loss with prolonged exposure?
A. 50 dB
B. 70 dB
C. 85 dB
D. 95 dB
Correct answer: C – Prolonged exposure above 85 decibels can result in permanent hearing
damage.
14. Which federal agency oversees workplace safety standards?
A. FDA
B. CDC
C. OSHA
D. USDA
QUESTIONS AND ANSWERS (VERIFIED ANSWERS) PLUS RATIONALE
2025/2026 Q&A/ INSTANDOWNLOAD PDF
1. Which of the following best defines environmental health?
A. The study of human diseases
B. The control of environmental factors that can affect health
C. The analysis of social behavior
D. The study of mental health
Correct answer: B – Environmental health focuses on identifying, evaluating, and controlling
physical, chemical, and biological factors in the environment that affect human health.
2. Which agency primarily enforces air quality standards in the U.S.?
A. CDC
B. FDA
C. EPA
D. OSHA
Correct answer: C – The Environmental Protection Agency (EPA) enforces the Clean Air Act
and sets national air quality standards.
3. The Safe Drinking Water Act (SDWA) regulates:
A. Private well water
B. Public drinking water supplies
C. Ocean water
D. Stormwater drainage
Correct answer: B – SDWA covers all public water systems to ensure safe and clean drinking
water.
4. Which of the following is a vector-borne disease?
A. Influenza
B. Cholera
C. Malaria
D. Hepatitis B
Correct answer: C – Malaria is transmitted by the Anopheles mosquito, making it vector-borne.
,5. The main goal of solid waste management is:
A. Waste generation
B. Minimization, reuse, and recycling
C. Landfilling only
D. Increasing incineration
Correct answer: B – Proper waste management aims to reduce waste generation through reuse
and recycling before final disposal.
6. Foodborne illness can be prevented by maintaining hot food at:
A. 100°F
B. 120°F
C. 135°F or higher
D. 90°F
Correct answer: C – Hot foods must be held at 135°F (57°C) or above to prevent bacterial
growth.
7. The presence of coliform bacteria in water indicates:
A. Water hardness
B. Fecal contamination
C. Chemical pollution
D. Chlorine excess
Correct answer: B – Coliforms are indicator organisms for fecal contamination and potential
pathogens.
8. Which pest is most associated with transmission of plague?
A. Housefly
B. Tick
C. Flea
D. Mosquito
Correct answer: C – Plague is transmitted to humans through the bite of infected fleas.
9. The main cause of indoor air pollution in poorly ventilated homes is:
A. Ozone
B. Radon and combustion gases
C. Ultraviolet light
D. High humidity
Correct answer: B – Radon gas and combustion by-products like CO and particulate matter are
major indoor pollutants.
, 10. Which radiation type penetrates deeply into the body and requires lead shielding?
A. Alpha
B. Beta
C. Gamma
D. Ultraviolet
Correct answer: C – Gamma radiation is highly penetrating and requires dense materials like
lead for protection.
11. The Hazard Analysis and Critical Control Point (HACCP) system focuses on:
A. Product marketing
B. Preventing food contamination through process control
C. Food labeling
D. Waste disposal
Correct answer: B – HACCP is a preventive system that identifies and controls potential hazards
in food production.
12. Which of the following is NOT a waterborne disease?
A. Typhoid fever
B. Cholera
C. Dysentery
D. Tuberculosis
Correct answer: D – Tuberculosis is airborne, not waterborne.
13. Noise levels above what decibel can cause hearing loss with prolonged exposure?
A. 50 dB
B. 70 dB
C. 85 dB
D. 95 dB
Correct answer: C – Prolonged exposure above 85 decibels can result in permanent hearing
damage.
14. Which federal agency oversees workplace safety standards?
A. FDA
B. CDC
C. OSHA
D. USDA
