North East of Sheffield, but just too far out to get decent water. We get the opposite problem with the boilers - they fur up. Years ago, the kettle at work in Doncaster looked like a waste tip from a quarry inside. As an aside, the GCR Steam Railway Shed at Mexborough had one of the biggest water softening plants in the Uk as far as I know, and the tower was a local landmark for many years. Sadly all gone now.
