A new study at the Ohio State University found that water filter pitches don’t all do an equal job of filtering harmful materials from water. The new study compared three popular brands in their ability to filter out microcystins from tap water. One brand did fine, the other two didn’t stop the microcystins, which get into the water during harmful algal blooms.
The study, which appears in Water Science Technology: Water Supply, found that the fastest filter made with coconut-based activated carbon could only remove about 50% (or less!) of the microcystins. While the slowest one, made from an active carbon blend, made microcystins undetectable in the water.
The researchers don’t specifically name any of the three bands, but they are all common and range in price from $15 to $50. Interested parties would be able to read the study, which does specifically name the features of each pitcher and their findings, and deduce from that data which brand of pitcher to buy if they want the best filtration.