Water tanks being replaced

There are many water tanks on the roof of Ben Jonson House.  These provide all non-drinking water in flats (Drinking water comes direct from the mains to the kitchen tap).

Here is what the old tanks look like after being dismantled and removed.

Out with the old

The new tanks are made from plastic or fibreglass.   The BEO tells us that the tanks need to be replaced for health reasons.