nebulous

you should definitely talk to your union if this is a thing that has happened before

not having access to water at your workplace definitely violates something

We pushed it last year as last year UK hit 40c and the store hit 45c it was unbearable but our hr and union said there is no obligation except running water ( tap water ) but our water here isn’t potable

okay

if there's no running water then its grounds for legal reprimands

Right now it’s 36c in my warehouse and they went out and bought 330ml of water per person to last from 5pm - 8pm

cockheads

write down the date and people (coworkers and upper management) involved - describe everything that has happened in vivid detail and contact your union

don't talk to HR, they don't have your best interest in mind over the company's