Wastewater is water whose quality has been changed by use or contact with other materials. Its contents depend on the source.
What this means at your property
Water from different plumbing fixtures, processes or cleanup activities may require different handling. A repair plan should identify the source and affected locations instead of assuming all used water has the same characteristics.
How should a property backup be documented?
Record the fixture or system involved, timing and route through the building. Have the source problem evaluated by the appropriate provider and ask the restoration scope to address contacted materials separately from restoring normal drainage.