- Testing of raw wastewater
- Testing of sludge and discharged wastewater
It will be up to individual brands, whether or not they are ZDHC Contributors, to encourage their value chain to implement the guidelines and undertake testing.
ZDHC acknowledges that facilities with indirect discharge will have limits based on agreements with their contracted wastewater treatment plants or local authorities. Indirect discharge suppliers must meet their legal and/or contractual limits. The conventional parameters reported for ZDHC are for informational use only.