REHS Study Guide EXAM QUESTIONS AND ANSWERS 100% SOLVED (Newest 2025) What is the depth at which flies can emerge from a landfill? - Correct Answers ✅6 inches compacted and 5 inches noncompacted Why is the use of cooper sulfate crystals recommended for some septic tanks systems - Correct Answers ✅It will destroy roots that the solutions comes in contact with What is the overall purpose of bar screens, comminutors, and grit chambers when it comes to wastewater treatment? - Correct Answers ✅It removes larger solid What is the most plentiful form of available water? - Correct Answers ✅Groundwater What are Waterborne Diseases? - Correct Answers ✅Results from ingestion of water that is harboring a
pathogen example: Typhoid fever.
What are Water-washed Diseases? - Correct Answers ✅Spread by fecal-oral route or person to person contact.Facilitated by lack of personal hygiene.What are Water-based Diseases? - Correct Answers ✅Caused by infection arising through ingestion of 1 / 4
REHS Study Guide EXAM QUESTIONS AND ANSWERS 100% SOLVED (Newest 2025)
pathogenic agent Example: guinea worm larvae, Termatode
larvae.What are Water-related Diseases? - Correct Answers
✅Facilitated by insects vector that breed in water: example
filariastus abthropods that carry Dengue fever.What are Inhalation of contaminated water aerosols? - Correct Answers ✅Legionella Pneumophila What is the ecologic agent of cyclosporiasis? - Correct Answers ✅Cyclospora Cayetanensis What food is associated with cyclosporiasis? - Correct Answers ✅Imported Raspberries, Lettuce form South America Most waterborne disease fatalities occurred before 1940 and were attributed to the waterborne illness? - Correct Answers ✅Typhoid Fever Waters suitable for drinking water supplies and shellfish rearing are monitored routinely for? - Correct Answers ✅Microbiological Quality 2 / 4
REHS Study Guide EXAM QUESTIONS AND ANSWERS 100% SOLVED (Newest 2025) Only what % of the global content of water constitutes fresh water? - Correct Answers ✅2.6 or 3 Percent What is a waterborne disease that can be prevented through vaccinations is ? - Correct Answers ✅Typhoid Fever or Cholera The World Health Organization (WHO) estimates that ______% of all diseases are attributable to inadequate water or sanitation - Correct Answers ✅80 Percent Viral infections readily spread through drinking water, food and water-contact recreation activities due to what? - Correct Answers ✅The low infectious dose for pathogenic viruses and protoza.
Shigellosis: - Correct Answers ✅A bacteria
What is the specific agent for shingellosis? - Correct
Answers ✅Genus shingella Example: flexneri, sonnei,
boydlii, and dysenteriae What is the Reservoir for shingellosis? - Correct Answers ✅Feces of carriers and infected persons 3 / 4
REHS Study Guide EXAM QUESTIONS AND ANSWERS 100% SOLVED (Newest 2025) What are the symptoms of shingellosis? - Correct Answers ✅Acute onset with diarrhea, fever, tenesmus, frequent stools containing blood and mucus.What is the incubation for shingellosis? - Correct Answers ✅1-7 days, usually less than 4 days Botulism - Correct Answers ✅Bacterial toxin What is the specific agent for botulism? - Correct Answers ✅Clostridium botulinum and c para botulinum that produce toxins What is the reservoir for botulism? - Correct Answers ✅Soil, dust, fruits, veggies, food, mud, fish, animals and human feces.What are the symptoms of botulism? - Correct Answers ✅GI pain, diarrhea or constipation, prostration, difficulty swallowing, double vision, difficulty in respiration.What is the incubation period of botulism? - Correct Answers ✅2 hours to 8 days, usually 12-36 hours
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