Faucet filters, like a Pur Filter, clip on to the end of your faucet. This type of water filtration can be a bit unsightly, which is why we sometimes refer to them as “faucet warts” in-house. There are several conditions that can cause faucet filters to fail. First, lead levels in unfiltered incoming water could be higher than what the filter had been tested at in a lab. NSF certified faucet filters are tested at 150 parts per billion. However, lead levels in New York City, Flint, Michigan, Newark, New Jersey have been detected well above 200 parts per billion. Second, the water could be flowing faster than it was rated for, preventing sufficient contact time with filtration media. Finally, their size does not make for significant removal capacity. If your water has a variety of harmful contaminants, the lead-removal capacity can be significantly reduced.
Case Study: Newark, New Jersey distributed Pur end-of-faucet filters to residents during the summer of 2019 after the city discovered that it was in exceedance of the federal Action Level. The filters provided by Newark city officials did not remove lead. Click here to learn more.