Our employer has to test our drinking water and certify it safe at regular intervals. This is one of those tasks that rather than do it itself, LUL prefers to pass the buck, whoops we mean contract out, the task to another firm.
Said firm has been caught with its metaphorical trousers down, having forged the water safety certificates. Yes, you read that right. Your drinking water may be "certified" safe by a forgery.
Tubeworker will be checking before we drink any, and if there is no guaranteed safe drinking water, then we reckon that it may well not be safe to work.