We recommend replacing the water fountain filter every 1-2 months to maintain optimal performance and water quality. Regular filter changes help: Prevent the buildup of contaminants. Ensure clean and safe water for your pets. This schedule is based on average usage. For higher traffic or heavier use, check the filter condition more frequently. If you observe: Reduced water flow. An unusual taste or smell. These are signs the filter may need to be replaced sooner. Routine maintenance not only ensures a healthier experience for your pets but also prolongs the lifespan of the fountain system.