- | P a g e
REHS Exam (New Update) Study Guide Questions with Verified Answers| 100% Correct| Grade A Guaranteed What is the depth at which flies can emerge from a landfill?
Correct answer: 6 inches compacted and 5 inches noncompacted
Why is the use of copper sulfate crystals recommended for some septic tank systems?
Correct answer: It will destroy roots that the solution comes in
contact with
What is the overall purpose of bar screens, comminutors, and grit chambers when it comes to wastewater treatment?
Correct answer: It removes larger solids
What is the most plentiful form of available water?
Correct answer: Groundwater
What are Waterborne Diseases?
Correct answer: Results from ingestion of water that is
harboring a pathogen example: Typhoid fever
What are Water-washed Diseases?
- | P a g e
Correct answer: Spread by fecal-oral route or person to person
contact. Facilitated by lack of personal hygiene
What are Water-based Diseases?
Correct answer: Caused by infection arising through ingestion of
pathogenic agent Example: guinea worm larvae, Termatode
larvae
What are Water-related Diseases?Correct answer: Facilitated by insect vectors that breed in water: example filariasis arthropods that carry Dengue fever
What are Inhalation of contaminated water aerosols?
Correct answer: Legionella Pneumophila
What is the ecologic agent of cyclosporiasis?
Correct answer: Cyclospora Cayetanensis
What food is associated with cyclosporiasis?
Correct answer: Imported Raspberries, Lettuce from South
America
- | P a g e
Most waterborne disease fatalities occurred before 1940 and were attributed to the waterborne illness?
Correct answer: Typhoid Fever
Waters suitable for drinking water supplies and shellfish rearing are monitored routinely for?
Correct answer: Microbiological Quality
Only what % of the global content of water constitutes fresh water?
Correct answer: 2.6 or 3 Percent
What is a waterborne disease that can be prevented through vaccinations?
Correct answer: Typhoid Fever or Cholera
The World Health Organization (WHO) estimates that ______% of all diseases are attributable to inadequate water or sanitation?
Correct answer: 80 Percent
Viral infections readily spread through drinking water, food and water-contact recreation activities due to what?
- | P a g e
Correct answer: The low infectious dose for pathogenic viruses
and protozoa
Shigellosis:
Correct answer: A bacteria
What is the specific agent for shigellosis?Correct answer: Genus Shigella Example: flexneri, sonnei, boydii, and dysenteriae
What is the reservoir for shigellosis?
Correct answer: Feces of carriers and infected persons
What are the symptoms of shigellosis?
Correct answer: Acute onset with diarrhea, fever, tenesmus,
frequent stools containing blood and mucus
What is the incubation for shigellosis?