REHS FINAL EXAM 2026 ACTUAL QUESTIONS AND
ANSWERS RATED A+
✔✔In the west, the wood tick and rabbit tick. in the east, dog tick. - ✔✔Which tick
causes Rocky Mountain spotted fever?
✔✔Spores - ✔✔Bacillus cereus can form what as part of its reproductive cycle?
✔✔Anaerobe - ✔✔is Clostridium botulism an aerobe or anaerobe?
✔✔Diatomaceous earth filters - ✔✔Which swimming pool filters function the slowest?
✔✔Phenol red - ✔✔What do you use to measure pH?
✔✔What is oxidation in swimming pools? - ✔✔The process of nitrogen based organics
(snot, sweat, pee, feces, etc.) combining with the chlorine and then evaporating off. The
large contaminants are filtered and everything else is oxidized.
✔✔E.coli 0157:H7 - ✔✔What causes hemolytic uremic syndrome?
✔✔First in first out. - ✔✔What is the most important rule of food storage?
✔✔Red gills. Spoiled fish will have sunken eyes, elastic flesh and be gray in color. -
✔✔What is a sign of a fresh fish?
✔✔When conventional systems won't work due to impervious soil layers. In Utah, four
feet of suitable soil are required, and there needs to be 24" of separation to ground
water. (This answer may be when the impervious layer is within 10 feet of the surface.) -
✔✔When should alternative small wastewater systems be considered?
✔✔Between 160 F and 170F - ✔✔What is the min water temp for a hospital laundry
facility?
✔✔Biosafety level two. - ✔✔Which biosafety containment level is suitable for work with
agents of moderate potential hazard?
✔✔Sodium carbonate, which is soda ash. Sodium bicarbonate will also raise the pH,
but it raises the total alkalinity. - ✔✔What chemical is used to raise the pH in a
swimming pool?
✔✔Prior planning - ✔✔What is a valuable tool in timely emergency response?
✔✔Chlorine - ✔✔What can be used to disinfect water that is not chemically polluted or
extremely polluted?
, ✔✔A lawsuit against an item of property, not against a person (in personam). An action
in rem is a proceeding that takes no notice of the owner of the property but determines
rights in the property that are conclusive against all the world. - ✔✔what does "in rem"
mean?
✔✔Dry cleaning - ✔✔What is trichloroethylene used for?
✔✔Dumping in the ocean. - ✔✔What is not an allowable sludge disposal method?
✔✔Dumping in the ocean - ✔✔What is not an allowable sludge disposal method?
✔✔They are explosive and a health hazard. Methane is explosive at 5 to 15 percent. -
✔✔Why are methane and carbon monoxide monitored in landfills?
✔✔Paper products - ✔✔What is the major constituent of land fills?
✔✔It contains a starch additive that provides food for microorganisms. - ✔✔Why is
biodegradable plastic good for landfills?
✔✔Two feet. - ✔✔What is the final cover depth of soil over a sanitary landfill?
✔✔Water that is acidic, or has low pH. Water from deep wells tend to be more acidic,
and in some city water supplies, a buffer is added to raise the pH. Acidic water causes
more damage to the pipes. - ✔✔What is aggressive water?
✔✔What are the optimal conditions for composting? - ✔✔Oxygen
Moisure - 40% to 60%
Temp - at least 131 F for three days (WHO reccomends 140 F) for pathogen
destructions
carbon/nitrogen levels 25 to 35
✔✔Electricity and steam - ✔✔What is generated from combustion of waste in energy
plants?
✔✔Water - ✔✔what is the major constituent of wastewater?
✔✔It is the time from exposure to the time of illness - ✔✔What does latent phase mean
in the context of disease development?
✔✔Training employes about personal hygiene - ✔✔What is the most important element
in preventing food borne illness?
ANSWERS RATED A+
✔✔In the west, the wood tick and rabbit tick. in the east, dog tick. - ✔✔Which tick
causes Rocky Mountain spotted fever?
✔✔Spores - ✔✔Bacillus cereus can form what as part of its reproductive cycle?
✔✔Anaerobe - ✔✔is Clostridium botulism an aerobe or anaerobe?
✔✔Diatomaceous earth filters - ✔✔Which swimming pool filters function the slowest?
✔✔Phenol red - ✔✔What do you use to measure pH?
✔✔What is oxidation in swimming pools? - ✔✔The process of nitrogen based organics
(snot, sweat, pee, feces, etc.) combining with the chlorine and then evaporating off. The
large contaminants are filtered and everything else is oxidized.
✔✔E.coli 0157:H7 - ✔✔What causes hemolytic uremic syndrome?
✔✔First in first out. - ✔✔What is the most important rule of food storage?
✔✔Red gills. Spoiled fish will have sunken eyes, elastic flesh and be gray in color. -
✔✔What is a sign of a fresh fish?
✔✔When conventional systems won't work due to impervious soil layers. In Utah, four
feet of suitable soil are required, and there needs to be 24" of separation to ground
water. (This answer may be when the impervious layer is within 10 feet of the surface.) -
✔✔When should alternative small wastewater systems be considered?
✔✔Between 160 F and 170F - ✔✔What is the min water temp for a hospital laundry
facility?
✔✔Biosafety level two. - ✔✔Which biosafety containment level is suitable for work with
agents of moderate potential hazard?
✔✔Sodium carbonate, which is soda ash. Sodium bicarbonate will also raise the pH,
but it raises the total alkalinity. - ✔✔What chemical is used to raise the pH in a
swimming pool?
✔✔Prior planning - ✔✔What is a valuable tool in timely emergency response?
✔✔Chlorine - ✔✔What can be used to disinfect water that is not chemically polluted or
extremely polluted?
, ✔✔A lawsuit against an item of property, not against a person (in personam). An action
in rem is a proceeding that takes no notice of the owner of the property but determines
rights in the property that are conclusive against all the world. - ✔✔what does "in rem"
mean?
✔✔Dry cleaning - ✔✔What is trichloroethylene used for?
✔✔Dumping in the ocean. - ✔✔What is not an allowable sludge disposal method?
✔✔Dumping in the ocean - ✔✔What is not an allowable sludge disposal method?
✔✔They are explosive and a health hazard. Methane is explosive at 5 to 15 percent. -
✔✔Why are methane and carbon monoxide monitored in landfills?
✔✔Paper products - ✔✔What is the major constituent of land fills?
✔✔It contains a starch additive that provides food for microorganisms. - ✔✔Why is
biodegradable plastic good for landfills?
✔✔Two feet. - ✔✔What is the final cover depth of soil over a sanitary landfill?
✔✔Water that is acidic, or has low pH. Water from deep wells tend to be more acidic,
and in some city water supplies, a buffer is added to raise the pH. Acidic water causes
more damage to the pipes. - ✔✔What is aggressive water?
✔✔What are the optimal conditions for composting? - ✔✔Oxygen
Moisure - 40% to 60%
Temp - at least 131 F for three days (WHO reccomends 140 F) for pathogen
destructions
carbon/nitrogen levels 25 to 35
✔✔Electricity and steam - ✔✔What is generated from combustion of waste in energy
plants?
✔✔Water - ✔✔what is the major constituent of wastewater?
✔✔It is the time from exposure to the time of illness - ✔✔What does latent phase mean
in the context of disease development?
✔✔Training employes about personal hygiene - ✔✔What is the most important element
in preventing food borne illness?
