There's no such thing as truly flushable wipes. They're the bane of plumbers everywhere... Actually more the bane of people having to pay the plumber bill at some stage. A quick google will confirm this.

Think of it... To be flushable they need to disintegrate in water. But they're wet wipes so they are always wet... Yet they're not disintegrating. Wipes which disintegrate in water is just toilet paper.