Thanks Mike. In cases like this (post #7) I wish that they didn't have the same names. William - I think Jnr - who was alive in 1887, was president of the Erdington Historical Society and gave an address in that year which I've found very useful. He was also a JP.
The pipe does not seem visible on google earth, but then, as this old reservoir is no longer used for water supply, this is not surprising.
John, a friend of mine who was brought up in Erdington, remembers the Dwarf holes, which disappeared when Spaghetti junction was built.
Further to the last maps, in 1866 more work was planned in the area, with new pipelines and pump houses. the plans for this around Witton are shown below
View attachment 126817
The old building may have looked on the inside just like the one we are trying to save at Sandfields in Lichfield. We think that (to be confirmed) the beam engines were built by the same Tipton company. So we know what the building would have looked like from the inside.
Have to say, the new building is a bit bland
There was another, smaller, lake on the other side of Bleak Hill and this whole area was named as 'The Bogs' on earlier maps.
and is that the newer waterworks building on post 22 mort...looks disused now