The wipes should be fine, sewers have processors [http://www.youtube.com/watch?v=gi1V7gXyVeo] in them of various sizes that can crunch up almost anything that would fit down toilets. Typically they will have a single machine at the joining of several small diameter residential drains and later on whole banks of them where sewers start getting to the 1m and over size, 30m x 10m wide chambers of them are not uncommon on trunk sewers. The grease and cooking oils cause the problems as it obviously cannot be shredded, in sewers near concentrations of fast food outlets and restaurants you can get blobs of it bigger than a person blocking the sewers.Timmey said:Apparently, in the UK at least, the wipes are extremely bad for the sewage system. This is because they combine with grease and cause a blockage.
http://www.bbc.co.uk/news/uk-13566476
Yes I have a weird interest in civil engineering of all kinds.