Plumbed-in Water Cooler is leaking

Here at The Water Cooler Company we have to troubleshoot over the phone customers who have a leak from their  plumbed-in water cooler. In most cases these water cooler problems can be cleared up by following our simple troubleshooting instructions given below. For our rental and purchase customers we will of course go through this on the phone if needed Рfor the rest of you please enjoy the advice and tips for free.


Check the drip tray

Although some of our water coolers like the Cascade bottleless water cooler have a drip tray that feeds directly into mains waste water, many water coolers have a drip tray with a fixed capacity. This means that if the drip tray fills up over time with water then this can fill completely. Any more water will simply overflow from the drip tray and work its way down to the floor.

All drip trays can be simply removed from the water cooler and emptied out – and we strongly recommend that our clients check this first when they suspect a leak. It is also a good idea to have a cleaner emptying the drip tray on a regular basis as this is often overlooked by office staff.

If your cooler is still leaking then it is likely to be a problem with the pipework.

Firstly turn off the water supply to the water cooler

Water Cooler Shut Off Valve

Water Cooler Shut Off Valve

Locate the BLUE and WHITE shut off valve shown to the left. This is typically found at the back of the cooler or on the installation pipe work.

To turn off the water supply to the cooler turn the blue head 90 degrees either clockwise or anticlockwise so that the blue head is at 90 degrees to the pipework.

This will mean that no more water will be circulating around the water cooler and you have limited any leak.

Check the pipework from the mains water to the water cooler

Water cooler leaks are often caused by the water cooler being moved slightly which has put pressure on the pipework that connects the water cooler to the mains water. It may be that you can find the cause of the leak by checking that all the pipework is firmly fixed together – this is especially true of soft plumbed installations which often use simple John Guest push fittings.

In the case of hard plumbed installations please contact us as these are very hard to troubleshoot if you have no plumbing experience.

If none of the above tips work then please give us a call and we will try to help troubleshoot over the phone, or comment on this blog or lastly just send an email to [email protected].

Robert Laughton

Robert Laughton

Rob Laughton is an established part of the UK water industry and has business interests in drinking water products.

He is actively involved in the self-regulatory associations which work to keep strict standards within the UK water industry.

His related water businesses are listed on and include The Water Delivery Company - Londons' largest independent plumbed water cooler supplier.

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