There are a few key differences between ZeroWater and Brita pitchers. For one, ZeroWater filters use ion exchange technology to remove all dissolved solids from your water, while Brita only removes chlorine taste and odor. This means that ZeroWater will remove more contaminants from your water, making it healthier to drink. Additionally, ZeroWater pitchers have a five-stage filtration system that ensures all impurities are removed, while Brita pitchers only have three stages. This makes ZeroWater the better choice for those looking for the highest quality filtered water.