This is an all to real problem. Flushable wipes and sewers.
This isn't just a city problem. This is also a problem in your own home!
Just because it says on the box, that a butt wipe is flushable, doesn't mean its even getting to the street. We recently snaked a floor drain and my plumber pulled out loads of wipes..the homeowner stated she hadn't used them in several years!
They just lay out in the pipes and clog things up.
Lets face it- even if they become the cities problem, who ultimately pays for the city work?