Do Water Filters Remove Microplastics? What Most Guides Skip

Do Water Filters Remove Microplastics?

Do water filters remove microplastics? Some do, most don’t, and the box almost never tells you which category you’re dealing with. The problem isn’t the filters themselves, it’s that no federal law requires any filter to prove its microplastics claims before hitting a shelf. A filter can legally print “reduces microplastics” on the packaging with … Read more

Do Water Filters Remove Nitrates?

Do Water Filters Remove Nitrates

Do water filters remove nitrates? The answer to this question depends almost entirely on which filter you have. Reverse osmosis, ion exchange, and distillation can remove nitrates. Activated carbon filters, the kind inside most pitchers, faucet attachments, and refrigerator filters, cannot. Not meaningfully. Not even close! If you own a Brita, a PUR, or any … Read more

What Happens If You Don’t Change Your Water Filter?

what happens if you don't change your water filter

What happens if you don’t change your water filter goes beyond bad taste and slow flow. A peer-reviewed study from Duke University and NC State found that expired carbon filters can actually push PFAS levels higher than your unfiltered tap water. Not slightly higher. Measurably, demonstrably higher, in half the whole-house systems tested. That finding … Read more

Best Under-Sink Water Filter for Lead: 4 Certified Options (2 Require Zero Drilling)

Best Under-Sink Water Filter for Lead

Choosing the best under-sink water filter for lead comes down to one thing most buying guides gloss over: whether the filter is actually certified to remove lead, or just marketed like it is. Those are two different things, and the gap between them is wider than you’d expect; one of the best-selling filters in this … Read more

Countertop vs Under-Sink Water Filter Comparison (2026)

Countertop vs Under-Sink Water Filter Comparison

The countertop vs under-sink water filter comparison is the single most common question I get asked, usually while someone’s staring at their phone with six browser tabs open, trying to figure out which system actually makes sense for their kitchen. I’ve spent years installing, maintaining, and ripping out water filtration systems in people’s homes, and … Read more

Is There a Water Filter That Removes Fluoride Without Reverse Osmosis?

Water Filters That Remove Fluoride

You’re here because you’ve spent time looking at water filters, and you’ve noticed something confusing; is there a water filter that removes fluoride without reverse osmosis, or do all the options that claim to do so fall apart once you look closer? Plenty of filters promise to “improve water quality,” and some even hint at … Read more

Do Faucet-Mounted Water Filters Actually Remove Fluoride?

do faucet-mounted water filters remove fluoride

I get this question a lot; do faucet-mounted water filters actually remove fluoride? In almost all cases, no. Faucet-mounted water filters are good at improving taste and cutting chlorine. But when it comes to fluoride, they’re simply not built for that job. In fact, some of the most widely certified faucet filters are approved specifically … Read more