Sewer-ML is a sewer defect dataset. It contains 1.3 million images, from 75,618 videos collected from three Danish water utility companies over nine years. All videos have been annotated by licensed sewer inspectors following the Danish sewer inspection standard, Fotomanualen. This leads to consistent and reliable annotations, and a total of 17 annotated defect classes.
Date made available18 Jun 2021
Geographical coverageDenmark


  • Sewer Defects
  • Sewer
  • Sewer Inspection
  • Multi-Label Image Classification
  • Defect Classification

Cite this