Smaller, in-house wastewater lines, for example the pipes leading away from a sink can easily become blocked by hair, cooking grease and the buildup of limescale. In addition, drainpipes can get stuck due to subsidence, which is causing a pocket of water to form. Solid material then builds up in the pocket of water and prevents wastewater draining away.

There is often only one solution to the problem: Completely exposing the wastewater line. However, that is not necessary: Before breaking open walls and dismantling wastewater pipes, it is possible to quickly and cost-efficiently localize the cause of a blockage by means of a visual inspection. That makes it possible to determine what has caused the water damage or the blockage as well as precisely locating the cause. A video endoscope is recommended for smaller wastewater lines. Depending on the size of the pipe, a push rod camera may be more suitable for inspection, for example in the case of house connection pipes.

Performing video inspections of smaller wastewater lines

The video endoscope is designed for use in wastewater lines measuring 20 mm in diameter and more. It is possible to connect flexible probes with a diameter of 3.9mm or 5.5mm. The Wöhler VE 400, for example, stores data on an SD memory card in the device. The Wöhler VE 200 enables you to connect to Wireless LAN capable devices. The required Wöhler app is of course free of charge.

To guarantee sufficient brightness, the camera head is equipped with adjustable LED lights to illuminate the inside of the wastewater line. The small diameter of the endoscope allows a direct view into the wastewater pipe below the sink.


  • Visually inspecting smaller drainpipes with the aid of a video endoscope makes it possible to detect blockages inside the pipes
  • An inspection camera system is suitable for larger and longer wastewater lines
Video inspection of a small drain pipe with the Wöhler VE 200 video endoscope