More than 7,000 factories in greater Dhaka discharge roughly 634 million gallons (2.4 billion liters) of untreated effluent into nearby water bodies every day, according to a report in Bangladesh's The Daily Star drawing on World Bank figures. The scale of the discharge lands directly on the compliance agendas of apparel brands sourcing from the country's largest manufacturing hub.

Clothing manufacturing generates nearly four-fifths of Bangladesh's export earnings, which gives the sector — and its buyers — outsized national leverage. Weak enforcement of environmental regulations means the effluent, including dyes and process chemicals, flows into rivers that surrounding communities depend on for irrigation and household use.

What does the pollution mean for brands?

Brands that market carbon neutrality, circularity and net-zero sourcing continue to buy from factories linked to severe local water pollution, a gap that puts their sustainability claims under scrutiny. The report frames the exposure in blunt terms.

"The people bearing these costs are the farmers who can no longer irrigate with river water, garment workers whose lungs have absorbed years of textile dust, and children in riverside slums whose developmental delays will never appear in a corporate ESG disclosure," The Daily Star reported.

A Bangladesh brief from the Lancet Commission estimated that pollution in air, water and soil accounts for 26.6% of deaths nationwide. That converts what is often treated as an environmental reporting issue into a public-health liability question for buyers with exposure to Dhaka-area wet processing.

Do green certifications cover the problem?

Bangladesh has made measurable progress on factory infrastructure: 273 factories have received LEED green certification. But The Daily Star report stressed the limits of that metric, noting such certifications "do not automatically guarantee that wet processing, dyeing, washing, and wastewater discharge are being managed across the entire production chain."

For sourcing teams, that distinction matters. A LEED plaque on a garment unit says little about whether the dyeing and washing tiers — often subcontracted — treat their wastewater before discharge. The dirtiest stages of production can sit outside both certification scope and public accounting.

What comes next?

The report identifies three levers for improvement:

• Stronger enforcement of wastewater rules by Bangladeshi authorities
• Wider installation and use of effluent treatment systems across wet-processing units
• Greater transparency from global brands on where production occurs and what pollution it generates

With export dependence giving factories and the state a strong incentive to preserve buyer relationships, tightening wastewater compliance in greater Dhaka is likely to become a recurring due-diligence checkpoint for brands whose ESG claims are now measured against the 634-million-gallon-a-day baseline.