Sewage water flooded on A40

The A40 from Gerrards Cross to Beaconsfield by Wapseys Wood is in a disgusting state. Every time you drive along there, there is foul water flooded on the road which absolutely sinks of sewage. Cars get covered in this filth every time you drive along this stretch of road. It is a health hazard. Today, I saw a poor cyclist having to drive through this flood, getting sprayed with filthy, sewage water. It has been reported before but nothing has been done and it has been like this for weeks. It is worse now since the wetter weather. It is a health and safety risk which must be sorted out urgently.