Maxion Filter Technology Certified to remove 99 Percent of Lead, and over 70 other contaminants including 96 Percent of Mercury and 92 Percent of certain Pesticides. Filters over Mineral Core for crisp, refreshing taste. CleanSensor Monitor - more visible electronic filter change light. for enhanced filter compliance and 60 Percent improved battery life New leak proof connector & improved grip.1 Filter provides up to 100 gallons (2 to 3 months) of clean water.