Regularly replace your filter to keep your Brita Faucet Mount System in top performance for healthier*, great tasting filtered water on tap. From the worlds #1 brand in water filtration**, this replacement water filter uses Advanced Brita Carbon-block technology, is certified to reduce chlorine (taste and odor) and reduces 60+ contaminants including 99% of lead and even microplastics***. This Brita filter system replaces 1,800 bottles**** per year. Lasts approximately 4 months, so you only have to change it 3 times per year*****. Does not fit pull-out or spray style faucets. *Based on health contaminant reduction, per WQA certifications. **Based on latest 52wk IRI unit sales data as of [enter most recent date]. ***See certifications. Substances reduced may not be in all users water. ****Standard 16.9 oz single use bottles. *****Approx. timing based on average family usage and 100 gallon filter life. Refer to systems indicator for actual time to change.