REHS Study Guide Questions And Answers All Correct

REHS Study Guide Questions And Answers All Correct What is the depth at which flies can emerge from a landfill? - ANS 6 inches compacted and 5 inches noncompacted Why is the use of copper sulfate crystals recommended for some septic tanks systems - ANS 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? - ANS It removes larger solid What is the most plentiful form of available water? - ANS Groundwater What are Waterborne Diseases? - ANS Results from ingestion of water that is harboring a pathogen example: Typhoid fever. What are Water-washed Diseases? - ANS Spread by fecal-oral route or person to person contact. Facilitated by lack of personal hygiene. What are Water-based Diseases? - ANS Caused by infection arising through ingestion of pathogenic agent Example: guinea worm larvae, Termatode larvae. What are Water-related Diseases? - ANS Facilitated by insects vector that breed in water: example filariastus abthropods that carry Dengue fever. What are Inhalation of contaminated water aerosols? - ANS Legionella Pneumophila What is the ecologic agent of cyclosporiasis? - ANS Cyclospora Cayetanensis What food is associated with cyclosporiasis? - ANS Imported Raspberries, Lettuce form South America Most waterborne disease fatalities occurred before 1940 and were attributed to the waterborne illness? - ANS Typhoid Fever Waters suitable for drinking water supplies and shellfish rearing are monitored routinely for? - ANS Microbiological Quality Only what % of the global content of water constitutes fresh water? - ANS 2.6 or 3 Percent What is a waterborne disease that can be prevented through vaccinations is ? - ANS Typhoid Fever or Cholera