headline: How drones are replacing people in sewer surveys
text: Drones are going underground to survey the sewers in Scotland.
  gy is being used to increase access and to avoid hazards to workers when surveying pipelines.
  Scottish Water hopes that developments in scanning can also help assess longer-term structural issues.
  mpany said more accurate inspections would cut the cost of repairs and maintenance and reduce the risk of flooding and pollution.
  Footage: Scottish Water