Which Water Contaminants Can You Expect Our Filtration Systems to Remove?

Written by Craig "The Water Guy" Phillips

Our filtration systems are built to remove the contaminants standard tap water treatments leave behind — PFAS, lead, chlorine, chloramines, and fluoride. The key is matching the right filter media to the right threat. Catalytic carbon, reverse osmosis, and NSF 53-certified media each target different contaminants with varying effectiveness. Not every filter catches everything, and the difference between 66% and near-100% removal matters more than most people realize. Stick with us and we'll break it all down.

Key Takeaways

• Catalytic carbon and reverse osmosis systems effectively remove PFAS, chlorine, chloramines, lead, and fluoride from household drinking water.
• Reverse osmosis paired with carbon filtration provides the most comprehensive protection against combined contaminants, including fluoride at roughly 90% reduction.
• Lead removal requires NSF 53-certified media specifically, as standard carbon filters may not adequately address this contaminant.
• Chlorine and chloramines are best addressed with catalytic carbon or carbon combined with KDF filtration media.
• PFAS removal effectiveness varies widely by filter type; catalytic carbon and RO systems outperform basic GAC and standard pitcher filters.

What's Actually in Your Tap Water: Including PFAS?

Even if your water looks crystal clear, what's flowing from your tap could tell a very different story. The EPA regulates over 80 contaminants in public water systems, yet contamination can still occur between the source and your faucet. Private well owners face even greater uncertainty—wells go unregulated, meaning bacteria, nitrates, and metals can quietly accumulate without warning.

Then there's PFAS—"forever chemicals" detected across more than 7,000 U.S. communities. They don't break down, they don't announce themselves, and standard testing often misses them entirely.

Your utility's annual Consumer Confidence Report is a reasonable starting point, but it won't tell you what's actually coming out of your tap. That requires direct testing—and that's precisely where the right filtration strategy becomes critical.

How Filters Remove PFAS & Why Not All of Them Work

Knowing your water carries PFAS is one thing—knowing which filter actually removes them is another. Standard carbon pitchers often reduce PFAS by only 22–66%. That gap matters.

Not all filters are created equal—standard carbon pitchers remove as little as 22% of PFAS. That gap has consequences.

Here's what separates filters that work from ones that don't:

1. Media type – Catalytic or specialty carbon, and reverse osmosis systems, achieve near-complete PFAS removal; basic GAC often falls short.
2. Contact time and filter mass – Insufficient media means PFAS molecules pass through before adsorption occurs.
3. Sustained performance – A filter removing 100% on day one may fail by gallon 20. Capacity and certified service life determine real-world value.

We recommend independent lab verification against your specific tap water, because PFAS isn't one compound—it's thousands, and not every filter targets them all.

PFAS, Lead, and Chlorine: What These Filters Are Built to Remove

Most home filters are built around three core threats—PFAS, lead, and chlorine—but no single technology handles all three equally well. Here's what we've learned: pairing technologies delivers what single-stage systems can't.

Contaminant	Best Filter Technology
Chlorine/Chloramines	Catalytic carbon or carbon/KDF
Lead	NSF 53–certified media
PFAS	GAC, catalytic carbon, or RO
Fluoride	Bone char + RO (~90% reduction)
Combined threats	Carbon + RO multi-stage systems

We recommend confirming NSF/ANSI certifications before trusting any product claim. Independent lab results on PFAS vary wildly—some filters hit near 100% reduction, others barely register. Knowing your contaminant profile lets you choose strategically rather than hope a single filter covers everything.

Which Filter Removes the Most PFAS From Tap Water?

When EWG tested 10 consumer filters head-to-head, three pitchers—Travel Berkey, ZeroWater 7-Cup, and Clearly Filtered—each hit 100% removal of every PFAS analyte measured, with Epic close behind at 98%.

Mid-range options like PUR (~79%), Brita (~66%), and Aquagear (~65%) only partially reduced PFAS.

Here's what separates the top performers:

1. Cost vs. longevity: ZeroWater costs just $24.99 upfront but needs replacing every ~20 gallons; Travel Berkey costs $344 yet lasts ~6,000 gallons.
2. First-year investment: Clearly Filtered runs ~$436.50 annually despite perfect PFAS removal.
3. Test limitations: Each filter ran once on a single sample, so long-term, real-world performance may vary.

Knowing these trade-offs helps you choose complete protection that actually fits your lifestyle.

How to Choose the Right PFAS Filter for Your Water Supply

Choosing the right PFAS filter starts with knowing what's actually in your water—because a filter that crushes every PFAS analyte in a lab test can still underperform if it's not matched to your specific contaminants.

Test your tap first, identify which PFAS are present, then cross-reference independent lab data for those exact analytes.

We've seen top performers like ZeroWater, Clearly Filtered, and Travel Berkey hit near-100% removal—but each carries different trade-offs.

ZeroWater costs less upfront yet demands frequent cartridge swaps.

Travel Berkey runs expensive initially but handles roughly 6,000 gallons per filter.

Prioritize NSF certifications, verified removal claims, and technologies like reverse osmosis or high-performance carbon block media.

Then replace cartridges on schedule and retest periodically—because consistent protection beats a single impressive result.

Frequently Asked Questions

What Types of Water Contaminants Can Water Filters Remove?

Our filtration systems remove sediment, chlorine, chloramines, VOCs, pesticides, fluoride, dissolved salts, heavy metals like lead, PFAS, nitrates, and harmful microbes—giving you cleaner, safer water through targeted, multi-stage technology built for complete contaminant control.

What Kinds of Contaminants Would the Filter Need to Remove?

The contaminants you'll need to remove depend on your water source—we're typically targeting sediment, chlorine, chloramines, VOCs, heavy metals, dissolved minerals, fluoride, iron, sulfur, and microbial threats like bacteria, viruses, and Cryptosporidium.

Which of These Contaminants Can Be Removed by a Good Water Filter?

We can filter out chlorine, chloramine, VOCs, pesticides, fluoride, nitrates, heavy metals, bacteria, protozoan cysts, and hardness-causing minerals—essentially tackling the full spectrum of contaminants threatening your water's safety and quality.

What Are Three Major Contaminants in Water?

Three major water contaminants we're up against are lead, microbial pathogens like E. coli, and PFAS "forever chemicals"—each posing serious health risks that the right filtration system can effectively tackle for you.