Fat Blocks the sewer

I have never understood why the Council tells you to "wash your food containers before placing in the recycling bin".

I'm not going to,

a) it wastes water and I'm on a water meter
b) Anglian Water tell you NOT to put food waste down the drains! 

See this story, all the waste washed down the drains eventually can block the drains. So who do you obey?

The Water Company - not the council i say.