Cleaning a water cooler usually requires using a mild bleach solution to rinse out the interior reservoir of the device. You need bleach, a bucket, a scrub brush or sponge, water and rubber gloves. A water cooler can usually be cleaned in under an hour.
- Prepare the bleach solution
Mix 1 tablespoon of bleach per gallon of water. Leftover solution may be reused within 30 days.
- Disassemble the water cooler
Unplug the water cooler before doing anything else. Remove the water container from the top of the cooler for easier access to the reservoir. Drain any excess water from the reservoir into a bucket by using the faucet.
- Clean the reservoir
Pour the bleach solution into the reservoir, and let it stand for three minutes. Then, using rubber gloves and a scrub brush, remove any buildup that may have collected in the reservoir. If the cooler has other parts in the interior, remove them. Clean the parts in the bleach solution, and place them back into the reservoir.
- Rinse out the bleach solution
Drain the reservoir into the bucket. Then, refill the reservoir with clean water to rinse out the bleach. Repeat this process several times to ensure that the bleach is removed.
- Remove the screen tray and screen
Clean both items in the bleach solution. Wash thoroughly with clean water, and place them back into the cooler.
- Place the water container on the cooler
Wipe down the top and exterior of the water container with the bleach solution. Insert the water bottle into the cooler. After the reservoir is filled, plug in the water cooler and allow 30 minutes for the water to cool.