Non-Toxic Water Filter Guide: Why I Switched to Clearly Filtered (And What I Tested First)

I didn't think much about our tap water until I looked up our local water quality report on EWG's tap water database. What I found: 12 contaminants detected above what EWG considers health guidelines, including chromium-6, chloroform, and low levels of PFAS (per- and polyfluoroalkyl substances, also called "forever chemicals").

The EPA's legal limits for many of these are outdated -- often set decades before the full health research existed. EWG's guidelines are more conservative and based on current epidemiological data. The gap between "legal" and "safe" is wider than most people realize.

I spent three months testing four different water filtration systems. Here's what I found.

What You're Actually Filtering For

Not all contaminants require the same filtration technology. The categories that matter:

PFAS (forever chemicals): Linked to thyroid disruption, immune suppression, and increased cancer risk. Found in most US public water systems. Requires activated carbon + other specialized media to remove effectively. Brita does NOT remove PFAS.

Lead: Present in older pipes and some fixtures. Even low levels affect cognition in children and cardiovascular health in adults. Standard pitcher filters can help.

Chlorine and chloramine: Added by municipal water treatment. Low acute risk but produces disinfection byproducts over time. Most filters remove these well.

Nitrates: Common in agricultural areas. Standard carbon filters don't remove nitrates well -- needs reverse osmosis or specific ion exchange media.

Microplastics: Increasingly present in tap water worldwide. Removed by sub-micron filtration.

The reason Brita and most grocery store pitcher filters underperform: they use basic activated carbon that removes taste and odor contaminants but doesn't address PFAS, heavy metals at meaningful levels, or nitrates.

The 4 Filters I Tested

Brita Standard Pitcher: Removes chlorine, some lead, some particulates. NSF 42 and 53 certified. Does not remove PFAS, nitrates, or chromium-6. Fine for taste improvement; not adequate for serious contaminant removal.

ZeroWater Pitcher: Uses a 5-stage ion exchange filter that removes TDS (total dissolved solids) to near-zero levels. Good for lead and nitrate reduction. The filter life is very short (often 25--40 gallons) -- expensive per gallon in practice.

Berkey (Big Berkey): Gravity-fed system using black filter elements. Removes most contaminants including some PFAS, lead, nitrates, and bacteria. The issues: it's large, slow, expensive upfront, and there have been questions about consistent third-party testing certification.

Clearly Filtered Water Pitcher: This is what I switched to. NSF/ANSI 42, 53, 244, 401, and 473 certified. The "473" certification specifically covers PFAS removal -- very few consumer pitchers have this. Removes 365+ contaminants according to third-party testing. Filter life is 100 gallons (longer than most pitcher filters).

What Makes Clearly Filtered Different

The NSF 473 certification for PFAS removal is the key distinguisher. At time of writing, Clearly Filtered is one of only a handful of pitcher-style filters with this certification. They publish their independent lab test results on their website -- you can see the actual percentage reduction for specific contaminants.

Their filter removes 99.5%+ of PFAS compounds, 99.6%+ of lead, 99.9% of fluoride (if that matters to you -- it's a personal choice based on dental health tradeoffs), chromium-6, pharmaceuticals, and hundreds of others.

The pitcher itself is BPA-free, made in the USA, and the filter lasts about 100 gallons -- roughly 2 months for a family of four at average usage.

What I'd Tell a Friend

If your goal is "water that tastes better," Brita is fine and much cheaper. If your goal is actually removing the contaminants in your water report -- especially PFAS, which is in most US municipal water supplies at some level -- Clearly Filtered is the only pitcher-style system I found that's credibly certified to do that job.

I look at it as the cost of not buying bottled water (environmental nightmare, also frequently contaminated with microplastics) combined with the peace of mind of knowing what I'm actually reducing.

The ongoing filter cost is about $12--15/month at average usage, which is less than we were spending on bottled water before this.

Under-Sink vs. Pitcher: When to Upgrade

If you're seriously concerned about your water quality or have a higher-risk situation (older home with lead pipes, well water, known PFAS contamination in your area), a pitcher is a start -- not a long-term solution. Under-sink reverse osmosis systems remove a broader contaminant range and filter at the point of use for your most-used tap.

For most people in a newer home with municipal water, a Clearly Filtered pitcher covers the most significant risks at a reasonable ongoing cost.

Also worth reading: Reducing toxins in your water is part of my broader non-toxic home guide -- Branch Basics for cleaning, Caraway for cookware, and Clearly Filtered for drinking water are the three swaps I made first.

The Bottom Line

Don't buy a water filter for taste. Buy one based on what's actually in your water. Look up your zip code on EWG's tap water database, identify your specific contaminants, and match the filter certification to what you're trying to remove. For PFAS -- now present in an estimated 200 million Americans' drinking water -- Clearly Filtered is the pitcher-style solution with the strongest certification.