It was in June that SVT reported on the mystery at the rough treatment plant in Skara.

The problem had then been going on for six months and eluded the VA manager.

- I have never seen wet wipes come in in such large quantities, he said then.

The mystery continues

Now another six months have passed, the problem has increased and they still haven't managed to find out where the wet wipes come from. 

- There are a few rags here and a few rags there and you don't get a clear picture of where to look next, says Sven-Eric Stenermark.

However, the VA chief has a few theories.

Hear more about them and hear the VA manager talk about the new costly investment that will overcome the problem with the wet wipes in the clip above.