Water coolers & saving money

Here is an idea I was sent the other day from someone in a local authority:

We have a 'Bright Idea' scheme and one such idea was to replace all the water coolers with coolers plumbed directly into mains water.  This has meant no more large plastic bottles being delivered full and returned empty and also no more plastic cups as each member of  staff had already been given a glass.  This has worked out considerably cheaper and has also reduced our carbon footprint