It's down in the driver's side arch, behind the bumper, no?
Check the pipes are all connected. Sometimes they split..
It's more likely to be pipes than the bottle mate.
They're only flimsy.
£70!!!! christ! My bottle was actually split, just been and patched it up with some silicon this afternoon. It was split round the edge of the lower pump (right side pump, nearest the side of the car). Where the rubber seal enters the bottle it was cracked, no idea how the hell that developed...