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Module 1.3: Greywater Harvesting for Growing Our Food

What is Greywater?

Why use Greywater?

Using Greywater at Home

Using Greywater in Food Gardens

Using Greywater Safely

Tools & Resources

Greywater Harvesting- Knowledge Check

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Greywater Harvesting- Knowledge Check

Module 1.3: Greywater Harvesting for Growing Our Food
Greywater Harvesting- Knowledge Check

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Question 1 of 10

1. Question

What is Greywater?

Rainwater
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Drinking water
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Non-toilet household drinking water
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Toilet wastewater
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Question 2 of 10

2. Question

Which water source should never be reused as greywater?

Shower water
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Laundry water
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Hand-basin water
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Toilet water
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Question 3 of 10

3. Question

Why should greywater be applied directly to the soil?

To cool plant leaves
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To reduce evaporation
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To avoid contact with edible plant parts
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To increase soap absorption
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Question 4 of 10

4. Question

Which crop is most suitable for greywater irrigation?

Carrots
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Potatoes
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Spinach growing above ground
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Onions growing underground
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Question 5 of 10

5. Question

Why should greywater not be stored for more that 24 hours?

It evaporates
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It becomes too salty
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Micro-organisms grow and make it unsafe
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Plants stop absorbing it
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Question 6 of 10

6. Question

What is one benefit of alternating greywater with fresh water?

It increases soap levels
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It improves soil colour
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It helps leach salts from the soil
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It reduces plant growth
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Question 7 of 10

7. Question

What problem can sodium cause in soil when greywater is misused?

Increased rainfall
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Improved soil structure
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Damage to soil structure and poor water infiltration
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Faster plant growth
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Question 8 of 10

8. Question

How can sodium build-up in soil be managed?

Storing greywater longer
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Applying greywater every day
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Adding gypsum or rotating with fresh water
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Removing mulch
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Question 9 of 10

9. Question

Bag and tower gardens mainly fall under which scale of greywater use?

Household only
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Homestead and food gardens
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Industrial scale
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Municipal systems
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Question 10 of 10

10. Question

Why is greywater harvesting best taught through action learning?

It avoids discussion
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It focuses only on theory
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It allows people to learn by doing and reflecting together
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It replaces practical work
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