Most of the orange water exiting from the western bank of the brook is is from Laffak colliery which was located on the banking to the west of the stream and towards the houses between sankey valley and the road. Most of the water will be leachate from the pit heap. Ocherous water entering from under the east lancs comes from and shallower workings and crops towards Garswood Park/Billinge an area which has been heavilly opencasted in the past but still the water emerges.