"Greenpeace has investigated the manufacture of textiles where the immediate impact from the discharge of effluent into waterways from production is most visible. Unlike the facilities in the previous investigation, these factories don’t discharge their hazardous chemicals through their own dedicated pipelines. Instead, the facilities in these industrial zones generally send their effluent to centralised WWTPs. This practice, implemented by the Chinese authorities in an attempt to make the pollution from industrial discharges more manageable, is commonly used by textile manufacturers and other industries in China. Unfortunately this makes tracing the responsibility for the use and discharge of hazardous chemicals to individual facilities extremely complicated .... Many international brands source their products from facilities within such industrial zones." (Quoted from article)