Even when connected to the mains water coolers pose a risk of HAIs due to poor hygiene practices and maintenance. There are some which include carbon filters which in effect takes out any disinfectant intended to protect Water quality, in addition if the filters are not changed frequently, this become become colonised including with pseudomonas under the Graham negatives. The tubing also becomes colonised frequent points of contamination or also linked to the point of use where we have also detected faecal indicators due to poor hygiene. Each of these should be risk assessed to identify if the risk to the patients/staff/visitors out Waze The availability of cool drinking water particularly in this hot weather. I should link with the estate department and see who is responsible for their maintenance(it is not unusual for estates not even to be aware that these are present in some areas and there is no maintenance contract in place) and arrange their support for risk assessment. Please come back to me if you need any further support.