The GotHydroWater™ FILTER for the Alkaline Charcoal Water Jug offers superior filtration, enhancing your water by removing impurities and increasing pH levels for a healthier and more refreshing drinking experience. For best results, replace the filter every 1-2 months, depending on the water quality in your area. If using cleaner water sources, the filter can last up to 3 months, providing you with extended usability and consistently pure water.