How to collect rainwater safely - Exam
  • 1. What is the FIRST step in setting up a safe rainwater harvesting system?
A) Assess local regulations and requirements.
B) Buying a large storage tank.
C) Painting the collection surface.
D) Installing a fancy filtration system.
  • 2. What is a common material to AVOID using for a rainwater collection surface?
A) Metal roofing
B) Asphalt roofing
C) Concrete roofing
D) Clay tile roofing
  • 3. Which of these is a crucial component to prevent debris from entering your storage tank?
A) A pump with high pressure.
B) A brightly colored tank.
C) A solar-powered bubbler.
D) Leaf screen or gutter guard
  • 4. Why is a 'first flush diverter' important?
A) It removes the initial contaminated rainwater runoff.
B) It measures the amount of rainfall.
C) It adds minerals to the water.
D) It filters the water after it is stored.
  • 5. What is the primary purpose of a storage tank in a rainwater harvesting system?
A) To increase rainfall amounts.
B) To filter the rainwater.
C) To evaporate excess rainwater.
D) To hold the collected rainwater for later use.
  • 6. What material is generally considered safe for a rainwater storage tank?
A) Galvanized steel
B) Untreated wood
C) Copper
D) Food-grade plastic
  • 7. How should you protect your rainwater storage tank from sunlight?
A) Heat the tank with a heater.
B) Place a mirror on top of it.
C) Use an opaque tank or paint it a light color.
D) Wrap it in dark cloth.
  • 8. Why is it important to prevent algae growth in your rainwater tank?
A) Algae can contaminate the water and affect its taste.
B) Algae prevents freezing in winter.
C) Algae increases the amount of usable water.
D) Algae makes the water look cleaner.
  • 9. Which of these is a common method for disinfecting harvested rainwater for potable use (after filtration)?
A) Adding dirt.
B) Ultraviolet (UV) light
C) Adding sugar.
D) Boiling briefly
  • 10. How often should you clean your rainwater harvesting system, including gutters and tanks?
A) At least twice a year
B) Once every five years.
C) Only when it rains.
D) Never.
  • 11. What is a common maintenance task for rainwater harvesting systems?
A) Adding fertilizer to the tank.
B) Removing all the water every week.
C) Inspecting and cleaning filters.
D) Painting the roof black.
  • 12. What type of water is generally safe to collect for non-potable use?
A) Water from puddles.
B) Rainwater from clean rooftops.
C) Water from industrial runoff.
D) Water from swamps.
  • 13. What should you do before using collected rainwater for drinking?
A) Boil it once.
B) Filter and disinfect it thoroughly.
C) Add a little bleach.
D) Just let it sit in the sun.
  • 14. What is a benefit of using rainwater for irrigation?
A) It is always extremely hot.
B) It contains lots of fertilizer.
C) It is often highly acidic.
D) It is naturally soft and free of chlorine.
  • 15. Which of these is NOT a typical non-potable use for rainwater?
A) Watering plants
B) Flushing toilets
C) Drinking water without treatment
D) Washing cars
  • 16. What can cause contamination in a rainwater harvesting system?
A) Having a clean storage tank.
B) Using a leaf screen.
C) Regular rainfall.
D) Animal droppings on the roof.
  • 17. What is a backflow preventer used for in a rainwater harvesting system?
A) To measure the amount of rainwater.
B) To clean the tank.
C) To increase water pressure.
D) To prevent rainwater from flowing back into the municipal water supply.
  • 18. Which of these is a good way to minimize mosquito breeding in your rainwater tank?
A) Leave the tank open to attract mosquito predators.
B) Add sugar to the water.
C) Introduce stagnant water.
D) Ensure the tank is sealed.
  • 19. What is the purpose of filtration in a rainwater harvesting system?
A) To change the color of the water.
B) To remove sediment, debris, and other particles.
C) To increase the amount of water collected.
D) To add minerals to the water.
  • 20. How can you test the quality of your harvested rainwater?
A) By tasting it.
B) By smelling it.
C) Send a sample to a certified laboratory.
D) By looking at it.
  • 21. What type of filter is typically used as a pre-filter in a rainwater harvesting system?
A) Reverse osmosis filter
B) Water softener
C) Carbon filter
D) Sediment filter
  • 22. What is the best practice regarding pipe materials used for rainwater collection?
A) Use pipes made from food-grade or potable water-safe materials.
B) Use lead pipes.
C) Use any kind of pipe available.
D) Use old rusty pipes.
  • 23. What is the purpose of an overflow pipe on a rainwater storage tank?
A) To allow excess water to escape when the tank is full.
B) To add water to the tank.
C) To clean the inside of the tank.
D) To measure the water level.
  • 24. Why is it important to label your rainwater harvesting system clearly?
A) To prevent theft of the water.
B) To increase the value of your property.
C) To identify it as non-potable water for irrigation and other uses.
D) To make it look more attractive.
  • 25. Which of the following is a potential health risk associated with untreated rainwater?
A) Improved skin health.
B) Enhanced immunity.
C) Increased hydration.
D) Exposure to bacteria and parasites.
  • 26. How can you prevent leaves and debris from clogging your gutters?
A) Install gutter guards or screens.
B) Remove the gutters entirely.
C) Paint the gutters a bright color.
D) Use a pressure washer every day.
  • 27. What is a key consideration when choosing the location for your rainwater tank?
A) A level and stable surface.
B) A location directly under a tree.
C) A location far from your house.
D) A location near a power outlet.
  • 28. What is a potential consequence of using contaminated rainwater for irrigation?
A) Increased plant growth.
B) Reduced water consumption.
C) Improved soil drainage.
D) Contamination of soil and plants.
  • 29. Which of these is an advantage of a closed rainwater harvesting system over an open one?
A) Reduced risk of contamination and evaporation.
B) More natural sunlight exposure.
C) Lower installation cost.
D) Easier access to the water.
  • 30. When should you empty and clean your rainwater tank?
A) Never.
B) Every day.
C) When sediment or debris accumulates at the bottom.
D) Only when it rains.
Created with That Quiz — a math test site for students of all grade levels.