Definition:
Sewage which is not residential sewage or rainwater, produced as a result of commercial, industrial, storage, transportation or service activity as well as water mixed with sewage produced by another entities discharged by sewage network owned by this plant.

Source:

• Act of 20 July 2017, New Water Law
  Place of publication: (Dz. U. z 2024 r. poz. 1087, z późn. zm.)