WQA-Certified Woder Advanced filters are certified by WQA to NSF/ANSI 42 for Chlorine taste, odor and NSF/ANSI 372 for lead free compliance as verified and substantiated by test data. Capacity: 5,000 Gallons. Capacity is depending on the levels of sediment found in your tap water. Removal Capabilities: Our Advanced Woder WD-S-5K-REP Cartridge removes 99.9% of lead, heavy metals, chlorine, chromium 6, mercury, volatile organic compounds, carcinogens, and other contaminants, turbidity, odor and bad tastes. (claims tested by CLB Labs and are not certified by WQA) The WD-S-5K-REP is a single stage replacement cartridge for: Woder WD-S-5K-ADV-DC Water Filter.