Final NEHA Exam Questions with All
Correct Answers 2025-2026 Updated.
List the order of priority for these events:
No hand sink at a food festival
Chlorine gas leak at a pool
Power outage at a restaurant - Answer 1. Chlorine gas leak at a pool
2. Power outage at a restaurant
3. No hand sink at food festival
How do you filter out giardia lambia? - Answer · Rapid sand filtration
What agencies respond to bioterrorism attacks? - Answer · First responders: fire fighters and
hazmat, emergency medical personnel, law enforcement officers, public health officials, health
care workers, public works personnel
· The local Federal Bureau of Investigation (FBI) Weapons of Mass Destruction (WMD)
Coordinator and/or FBI Joint Terrorism Task Force (JTTF)
1. Pharmaceuticals in water treatment plants are:
· Solid
· Liquid
· Both
· Neither - Answer Both
What mosquito carries malaria? - Answer Anopheles
Which mosquito is the highest cause of encephalitis in the US? - Answer Culex
What is it called when milk is heated to 191°-212°F? - Answer Pasteurization
What is an antibacterial agent used on human skin tissue called? - Answer Antiseptic
What is the process of countering microbial infections with the use of antiseptics? - Answer
Antisepsis
,What is the most common cockroach in the US? - Answer German cockroach
What type of cockroach is referred to as a water bug? - Answer Either American or Oriental
cockroach
What is the minimum distance between a water line and a sewer line in a trailer park? - Answer
10 feet
What is the slope for ramps determined by the ADA? - Answer 1:12 or less
1. NSF and UL are organizations that do what? - Answer Certify food equipment
What is the amount of soil you must put on a finished landfill? - Answer 24 inches
What is most likely to carry Hantavirus? - Answer Rodents
What pest is LEAST likely to cause bites and itching in an urban setting? - Answer Ticks
What does HACCP stand for? - Answer Hazard Analysis Critical Control Point
Methemoglobinemia is caused by what in water? - Answer Nitrates
What is the first thing you do if you suspect several workers ill from sick building syndrome? -
Answer Interview complainant(s)
How many tips of healthy housing are there? - Answer 7
What should an ice machine disposal hook up to? - Answer Floor drain with air gap
What bacteria is used as an indicator for sterilization in an autoclave? - Answer Bacillus
sternothermophilus at 10^6
What would be three major concerns at a festival lasting more than 3 days? - Answer Water,
sewer, food protection
Flu virus is mainly passed via what organism? - Answer Humans
, Which is least likely to cause disease? - Answer Soil
What is most likely to contaminate food? - Answer Humans
By how many millions of people is the population increasing per year? - Answer 80 million
per year
What is the best way to minimize odors in a privy or latrine? - Answer Biological activities
and ventilation
Is household hazardous waste exempt from RCRA? - Answer Yes
What is the cause of swimmers itch? - Answer Schistosome dermatitis
What is the cause of hot tub rash? - Answer Pseudomonas aeruginosa
What is a proper emergency water treatment? - Answer 1-2 drops of chlorine per gallon of
water
What is the cause of amoebic dysentery? - Answer Entamoeba histolytica (protozoa)
What would travel furthest in a septic field: viruses or bacteria? - Answer Viruses
At what temperature should you store a pool chemical test kit? - Answer 36-85°F
What happens if alkalinity is too low in pools? - Answer · Damages pool
· Unstable pH
· Chlorine is less effective
· Results in acidic water: stinging eyes, nasal passages and skin
What is the maximum temperature for a spa? - Answer 104°F
What is the process of moderating the temperature of a food such as allowing a food to
gradually increase from a frozen temperature to facilitate heat penetration during cooking? -
Answer Slacking
Correct Answers 2025-2026 Updated.
List the order of priority for these events:
No hand sink at a food festival
Chlorine gas leak at a pool
Power outage at a restaurant - Answer 1. Chlorine gas leak at a pool
2. Power outage at a restaurant
3. No hand sink at food festival
How do you filter out giardia lambia? - Answer · Rapid sand filtration
What agencies respond to bioterrorism attacks? - Answer · First responders: fire fighters and
hazmat, emergency medical personnel, law enforcement officers, public health officials, health
care workers, public works personnel
· The local Federal Bureau of Investigation (FBI) Weapons of Mass Destruction (WMD)
Coordinator and/or FBI Joint Terrorism Task Force (JTTF)
1. Pharmaceuticals in water treatment plants are:
· Solid
· Liquid
· Both
· Neither - Answer Both
What mosquito carries malaria? - Answer Anopheles
Which mosquito is the highest cause of encephalitis in the US? - Answer Culex
What is it called when milk is heated to 191°-212°F? - Answer Pasteurization
What is an antibacterial agent used on human skin tissue called? - Answer Antiseptic
What is the process of countering microbial infections with the use of antiseptics? - Answer
Antisepsis
,What is the most common cockroach in the US? - Answer German cockroach
What type of cockroach is referred to as a water bug? - Answer Either American or Oriental
cockroach
What is the minimum distance between a water line and a sewer line in a trailer park? - Answer
10 feet
What is the slope for ramps determined by the ADA? - Answer 1:12 or less
1. NSF and UL are organizations that do what? - Answer Certify food equipment
What is the amount of soil you must put on a finished landfill? - Answer 24 inches
What is most likely to carry Hantavirus? - Answer Rodents
What pest is LEAST likely to cause bites and itching in an urban setting? - Answer Ticks
What does HACCP stand for? - Answer Hazard Analysis Critical Control Point
Methemoglobinemia is caused by what in water? - Answer Nitrates
What is the first thing you do if you suspect several workers ill from sick building syndrome? -
Answer Interview complainant(s)
How many tips of healthy housing are there? - Answer 7
What should an ice machine disposal hook up to? - Answer Floor drain with air gap
What bacteria is used as an indicator for sterilization in an autoclave? - Answer Bacillus
sternothermophilus at 10^6
What would be three major concerns at a festival lasting more than 3 days? - Answer Water,
sewer, food protection
Flu virus is mainly passed via what organism? - Answer Humans
, Which is least likely to cause disease? - Answer Soil
What is most likely to contaminate food? - Answer Humans
By how many millions of people is the population increasing per year? - Answer 80 million
per year
What is the best way to minimize odors in a privy or latrine? - Answer Biological activities
and ventilation
Is household hazardous waste exempt from RCRA? - Answer Yes
What is the cause of swimmers itch? - Answer Schistosome dermatitis
What is the cause of hot tub rash? - Answer Pseudomonas aeruginosa
What is a proper emergency water treatment? - Answer 1-2 drops of chlorine per gallon of
water
What is the cause of amoebic dysentery? - Answer Entamoeba histolytica (protozoa)
What would travel furthest in a septic field: viruses or bacteria? - Answer Viruses
At what temperature should you store a pool chemical test kit? - Answer 36-85°F
What happens if alkalinity is too low in pools? - Answer · Damages pool
· Unstable pH
· Chlorine is less effective
· Results in acidic water: stinging eyes, nasal passages and skin
What is the maximum temperature for a spa? - Answer 104°F
What is the process of moderating the temperature of a food such as allowing a food to
gradually increase from a frozen temperature to facilitate heat penetration during cooking? -
Answer Slacking
