Here's How Often You Should Really Replace Your Brita Water Filter

Brita Refillable Filter Starter Kit for Pitchers and Dispensers, BPA-Free, 80% Less Plastic*, Each Lasts Two Months, Includes 1 Shell and 3 Refillable Water Filters

Brita Standard Water Filter for Pitchers and Dispensers, BPA-Free, Reduces Copper, Cadmium and Mercury Impurities, Lasts Two Months or 40 Gallons, Includes 3 Filters for Pitchers