CARBON FOOTPRINT OF A T-SHIRT

What's one piece of clothing everyone owns? A basic cotton t-shirt.

It is also probably the most worn item in your closet. But have you ever wondered what the environmental impact of this ubiquitous cotton T-shirt is? 

Ecological footprint is defined as the impact of a person or community on the environment, expressed as the amount of land required to sustain their use of natural resources. While estimating the footprint of meat and fossil fuels is comparatively simpler, it's no easy feat when it comes to clothes.

Concrete Carbon Numbers

Why One Less T-Shirts Have Lower Carbon Footprint

Conventional Cotton T-Shirt:
- Carbon emissions: 2.7kg CO2 per shirt
- Water usage: 2,700 liters
- Pesticide use: Heavy (11% of global pesticides on 2.5% of arable land)

One Less Organic Cotton T-Shirt (GOTS Certified):
- Carbon emissions: 1.5kg CO2 per shirt (44% reduction)
- Water usage: 243 liters (91% less than conventional)
- Pesticide use: Zero harmful chemicals
- Biodegradable: Decomposes completely in 5 months

 Why the difference? 

Organic farming eliminates energy-intensive pesticide production, uses natural soil management, and supports carbon-sequestering practices. That's a 1.2kg CO2 saving per shirt, multiply by 100 shirts over 5 years = 120kg CO2 prevented from atmosphere.

Why Water Matters (Especially in India):

India faces severe water stress. Conventional cotton farming consumes 2,700 liters per shirt, that's enough drinking water for one person for 9 days. One Less organic cotton reduces this to 243 liters through:

• Rain-fed farming (uses natural water cycles)
• Soil health practices that retain moisture
• No water-intensive synthetic pesticides
• Over your lifetime (buying 10 organic t-shirts), you save 24,570 liters of water. That's equivalent to 245 days of drinking water for one person.

In order to calculate this, the entire life-cycle of the T-shirt must be brought into consideration - starting from creation, usage to disposal.

As part of this process, the amount of water and energy used, waste released, carbon footprint and air pollution generated needs to be measured. 

Here's a step-by-step approximation of the environmental impact left by one T-shirt (here come the scary numbers) 

• The cultivation of cotton itself for one shirt produces more than one kilogram of CO2. The World Resources Institute (WRI) states that cotton requires 24% of insecticides, 11% of pesticides, and uses about 3% of the world’s arable.
  
  
• According to the World Wildlife Fund, it takes 2,700 litres of water to produce the cotton for a single T-shirt.
  
  
• The spinning process that is followed accounts for another kilogram of CO2.
  
  
• Manufacturing the cloth releases 3 kilograms of CO2.
  
  
• Dyeing alone leaves 0.01 kilogram of carbon dioxide per wear (even more in case of dark textiles as compared to lighter ones).
  
  
• The remaining processes of packing, compilation of the catalogue, storage and dispatch produces 3 kilograms of CO2.
  
  
• A total of around 7 kilograms of CO2 is generated before the customer takes the t-shirt home.
  
  
• Extensive research conducted by Sandra Roos, a PhD student at Chalmers Institute of Technology in Sweden, shows that 22% of a garment’s climate impact came from transportation to and from the store.
  
  
• According to National Geographic, one load of laundry uses 40 gallons of water. 
  
  
• Additional processes of drying and ironing increases the level of CO2 to almost 12 kilograms.
  
  
• On an average, 3.3 kilograms of CO2 is produced before disposal, if it’s assumed that it will be washed around 55 times before it becomes rubbish.

While adding up these statistics will not give an exact percentage of footprint generated, they give us a basic understanding of how the entire life-cycle of a single T-shirt affects the planet, which ultimately calls for conscious usage and disposal on part of the consumer and more sustainable production on the part of the manufacturer. 

As a consumer, you can do your bit by shopping from sustainable brands and adopt sustainable fashion or buying pre-loved garments. Once you have purchased a T-shirt, it is impossible to undo the processes that have already taken place prior to purchase but you can reduce the overall footprint by reducing the number of times you wash the shirt, and when you do, wash with cold water and air dry. When the shirt has reached the maximum number of wears possible, either donate it or give it off to brands that make clothing out of cloth scraps and waste. 

Some resources to educate yourself on the Ecological Footprint of your clothes: 

https://www.youtube.com/watch?v=BiSYoeqb_VY&t=213s

https://youtu.be/xEExMcjSkwA

https://www.smithsonianmag.com/innovation/whats-environmental-footprint-t-shirt-180962885/

http://www.tshared.eu/blog-of-tsharedeu/carbon-footprint.html

https://www.thredup.com/fashionfootprint

FAQ's

Q: Is organic cotton really better for the environment?

A: Yes. Organic cotton produces 46% fewer carbon emissions, uses 91% less water, and eliminates pesticides entirely. One Less t-shirt = 1.2kg CO2 prevented vs conventional.

Q: How much water does one t-shirt really save?

A: One organic cotton t-shirt saves 2,457 liters compared to conventional cotton. That's 9 days of drinking water per person.

Q: Does GOTS certification actually matter?

A: Yes. GOTS (Global Organic Textile Standard) ensures zero harmful chemicals, sustainable farming, and fair labor. It's the highest standard in organic textiles