Water coolers have become popular in many public places and offices to provide easily accessible drinking water. Most office water coolers are bottle-fed, which requires periodically replacing the water bottle, but suppliers will typically collect, refill, and replace the bottles, making maintenance simple. Routine maintenance of water coolers is important to ensure clean, healthy water and is usually handled by the cooler supplier or a certified professional. Lack of hydration in the workplace can reduce productivity, so providing access to drinking water through office water coolers has important productivity and health benefits for employees.