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The Ultimate Composting Toilet Quiz
by Staff
If the amount of water wasted when you flush the toilet troubles you, a composting toilet may be for you. Find out everything you need to know about composting toilets and you may never need to flush again.

In a composting toilet, aerobic bacteria in the waste break it down with the help of _____, heat and time.

  • air
  • water
  • sand

The nutrient-rich organic matter that results from a composting pile or toilet is known as:

  • sludge
  • muck
  • humus

Which of the following is a type of composting toilet?

  • self-contained
  • central
  • both of the above

What is the only drawback of the central composting unit as compared to the self-contained unit?

  • It is more expensive.
  • It is more disgusting.
  • It has greater capacity.

The whole point of using a composting toilet is to recycle excrement without using:

  • air freshener
  • toilet paper
  • water

A typical American uses 74 gallons (280 liters) of water per:

  • flush
  • day
  • month

Federal law requires the installation in new homes of toilets that use only _____ of water per flush.

  • 1.6 gallons (6.1 liters)
  • 2.6 gallons (9.8 liters)
  • 3.6 gallons (13.6 liters)

How much water can a composting toilet save you per year?

  • 5,600 gallons (21,198 liters)
  • 6,600 gallons (24,984 liters)
  • 7,600 gallons (28,769 liters)

About 1.5 billion gallons (5.7 billion liters) of wastewater flow into _____ Bay every day.

  • Chesapeake
  • San Francisco
  • Massachusetts

What is the benefit of returning human waste to the ground instead of to our waterways?

  • It breaks up faster.
  • It neutralizes toxins in the soil.
  • It is less disgusting.

Which of the following is required by many states for the safe disposal of humus?

  • underground burial
  • treatment at a sewage treatment facility
  • both of the above

What is needed to keep the smell out of your bathroom when using a composting toilet?

  • good ventilation
  • air freshener
  • nose plugs

What is the minimum temperature needed to operate a composting toilet?

  • 55 degrees Fahrenheit (12.7 degrees Celsius)
  • 65 degrees Fahrenheit (18.3 degrees Celsius)
  • 75 degrees Fahrenheit (23.8 degrees Celsius)

What is the reason composting toilets have not gained in popularity, despite their many advantages for the environment?

  • They are disgusting to use.
  • They are smelly.
  • both of the above

A self-contained composting toilet shouldn't be used if more than _____ people are using it on a regular basis.

  • two
  • three
  • four