The ZDHC Wastewater Guidelines apply to industrial wastewater discharges and sludge produced from wastewater treatment operations of textile, apparel and footwear suppliers with wet processing facilities including, but not limited to:
a. Textile dyeing and finishing
b. Yarn dyeing
c. Fabric mills
d. Laundry, washing and finishing facilities
e. Printing facilities
f. Vertical finished goods manufacturing facilities where any of the above wet processes occur
These Guidelines apply to suppliers with direct discharge, indirect discharge and on-site Zero Liquid Discharge (ZLD) treatment plants.