The global fashion industry is facing increasing scrutiny over its enormous environmental footprint, with new estimates showing that a single cotton T-shirt requires approximately 2,700 litres of water to produce. Experts say this amount is roughly equal to one person’s drinking water needs for two and a half years.
According to environmental assessments cited by the World Wildlife Fund (WWF), the water footprint of a cotton T-shirt includes irrigation for growing cotton, textile processing, dyeing, and finishing. While production methods vary by region, cotton remains one of the most water-intensive crops used in commercial agriculture.
The impact becomes even more significant when viewed on an industry-wide scale. The fashion sector consumes an estimated 79 to 93 billion cubic metres of freshwater every year, accounting for nearly four percent of global freshwater extraction. Much of this water is sourced from regions already experiencing severe water stress and recurring drought conditions.
Researchers note that approximately 60 percent of a garment’s total water footprint occurs during cotton cultivation, while the remaining 40 percent is consumed during manufacturing processes such as spinning, weaving, dyeing, and finishing. Textile dyeing and finishing have emerged as some of the industry’s largest sources of water pollution due to the discharge of dyes, chemicals, heavy metals, and other contaminants into rivers and groundwater systems.
Countries including Bangladesh, India, Pakistan, Vietnam, and China, which serve as major textile production hubs, have experienced growing concerns over industrial wastewater contamination linked to garment manufacturing.
The environmental costs extend beyond water consumption. The fashion industry also contributes significantly to greenhouse gas emissions, generating approximately 1.2 billion tonnes of carbon dioxide equivalent annually. This figure exceeds the combined emissions from international aviation and maritime shipping, according to United Nations estimates.
Another growing concern is microplastic pollution. Synthetic clothing releases microscopic fibres during washing, with an estimated 500,000 tonnes of microfibres entering oceans each year. Scientists have detected these particles in marine life, human blood, placental tissue, and other parts of the human body.
Textile waste represents a further challenge. The global apparel industry generates around 92 million tonnes of textile waste annually, and nearly 85 percent of discarded clothing eventually ends up in landfills or incinerators. Environmental groups warn that fast fashion trends have accelerated clothing consumption while reducing the lifespan of garments.
One of the most striking examples of fashion’s environmental impact is the Aral Sea in Central Asia. Once the world’s fourth largest inland lake, it shrank dramatically after rivers feeding it were diverted to irrigate cotton fields. The environmental disaster devastated local ecosystems, fishing communities, and regional economies.
Experts argue that the industry’s environmental footprint is likely larger than currently estimated due to incomplete reporting and limited transparency throughout global supply chains. They stress that greater disclosure, sustainable production practices, improved water management, and responsible consumer behavior will be critical in reducing the industry’s impact on water resources and ecosystems.
As global clothing production continues to rise, environmental researchers warn that the cumulative impact of billions of garments each year is placing increasing pressure on freshwater supplies, particularly in regions already struggling with water scarcity.