The Barbican is a large multi-purpose complex in the City of London. It houses the Barbican Centre, a performing arts centre, the Barbican Hall, a large concert hall, the Barbican Library, and the Museum of London. It is also home to the Guildhall School of Music and Drama. The complex is located on a site that was originally part of the Roman fort of Londinium.
0 ppm is the softest water, 400 ppm is the hardest water. The level of calcium carbonate in this water zone is 273 ppm.
The water supplied in the Barbican zone is hard water.