I'm one of biggest advocators that supports for water not to be sold. The government should try and finance it in their budget but unfortunately it's not yet come into reality. Although, where I used to work, staffs usually get free water because there's a water dispenser provided by the company.
Does your workplace make such provisions for workers?
I am staying in a area where getting water is pretty expensive. This means that the company won't give you access to free water that you can drink. There is access to water for office use though, but the source of water is never clean for drinking purposes.