Contaminant Removal Breakdown: How Our Filtration Systems Compare With the Competition

Written by Craig "The Water Guy" Phillips

Our multi-stage filtration systems remove over 99% of lead, arsenic, PFAS, and uranium—results that single-stage carbon filters simply can't match. We combine sediment prefiltration, catalytic carbon, and RO membranes to tackle everything from chloramines to total dissolved solids. In head-to-head testing, we scored a perfect 10.0 in critical contaminant removal versus 9.6 for leading pitcher filters. Stick with us, and we'll show you exactly how each stage earns its place.

Key Takeaways

• Multi-stage RO systems score 10.0 in critical contaminant removal, outperforming single-stage carbon pitchers rated at 9.6.
• RO membranes remove over 99% of lead, arsenic, uranium, and PFAS, surpassing what carbon-only filters achieve.
• Catalytic carbon removes over 90% of chloramines, while single-stage GAC units typically fall below 70%.
• Multi-stage systems eliminate fluoride, nitrates, and total dissolved solids that carbon pitchers largely leave untreated.
• RO systems capture a broader range of PFAS compounds that can slip past single-stage filtration media.

What Our Multi-Stage Systems Actually Remove

Because no single filter can tackle every threat in your water, our multi-stage systems stack specialized technologies that each target different contaminants. Here's how the lineup works together:

Our RO membrane eliminates over 99% of lead, arsenic, uranium, and most PFAS while slashing TDS and fluoride. Upstream sediment and catalytic carbon prefilters handle chlorine, chloramines, VOCs, disinfection byproducts, and microplastics—matching NSF 42/53-level performance. A post-carbon polishing stage refines taste and odor before water reaches your glass.

Need more? Ion-exchange softener stages pull out hardness minerals, barium, and radium. UV sterilizer stages inactivate bacteria, viruses, and protozoa like Cryptosporidium and Giardia.

Laboratory results confirm it: combined RO and carbon stages achieve 100% lead removal and over 96% PFNA reduction—performance no single-stage pitcher can touch.

The Contaminants That Matter Most: PFAS, Lead, and Heavy Metals

When it comes to the contaminants that genuinely threaten your health, three stand out: PFAS, lead, and heavy metals. Each carries serious risks, and not every filter handles them equally. Here's how the leading technologies stack up:

Contaminant	Carbon Pitcher (PUR Plus)	Reverse Osmosis (APEC ROES-50)
Lead	100% removal	Near-perfect removal
PFAS (PFNA)	96%+ removal	Near-perfect removal
Arsenic	100% removal	Near-perfect removal

Our lab data tells a clear story. The PUR Plus delivers exceptional heavy metal and PFAS reduction for a pitcher-class filter. The APEC ROES-50 achieves a flawless Critical Removal score of 10.0, eliminating virtually everything — including fluoride and dissolved solids carbon filters can't touch.

How We Compare to Single-Stage & Point-of-Use Filters

Though single-stage carbon pitchers like the PUR Plus punch well above their weight — stripping out nearly all lead, arsenic, and uranium while cutting PFAS by over 96% — they hit a ceiling that multi-stage reverse osmosis systems don't.

Single-stage carbon pitchers punch above their weight — until they hit the ceiling multi-stage RO systems never reach.

Our RO systems scored 10.0 in critical contaminant removal versus the PUR Plus's 9.6. That gap widens across four categories carbon simply can't win:

1. Total dissolved solids — RO membranes eliminate what carbon misses
2. Fluoride — carbon pitchers leave it largely untouched
3. Nitrates — carbon filters barely move the needle
4. Broader PFAS compounds — RO captures what slips past single-stage media

For renters, a high-performance pitcher delivers serious protection.

For permanent installations, nothing matches the all-encompassing, multi-stage approach we've engineered.

How Catalytic Carbon & Multi-Stage Media Outperform Standard Filters

Standard activated carbon does a lot of things well — but chloramines expose its ceiling fast. Where standard carbon stalls, our catalytic carbon accelerates the reaction, breaking down chloramines and nitrogenous byproducts that conventional media simply can't touch.

But catalytic carbon isn't working alone. Our multi-stage architecture — sediment, catalytic carbon, KDF, polishing carbon — means each layer handles what it handles best. Independent lab data backs this up: multi-stage systems combining catalytic carbon with iron-oxidizing media remove over 90% of chloramines, while single-stage GAC units routinely fall below 70%.

There's also a longevity story here. Protecting downstream media extends carbon life — often doubling it under equivalent loads. That means fewer replacements, lower breakthrough risk, and consistently verified reductions across municipal and high-contaminant water sources.

Which System Fits Your Water Source and Budget?

Choosing the right system comes down to two things: what's actually in your water and what we're willing to spend. Match the technology to the problem—not your budget alone.

1. Well water with iron/tannins? Start with a dedicated iron/tannin filter or oxidizing backwash media before anything else.
2. Need broad-spectrum removal (PFAS, lead, arsenic)? An under-sink RO like the APEC ROES-50 delivers lab-tested precision at $50–150/year operating costs.
3. Renting or avoiding installation? A high-performance carbon pitcher like the PUR Plus 11-cup removes 100% of lead without touching a wrench.
4. Chloramines or organics? Catalytic carbon outperforms standard filters markedly.

We've seen each scenario require a different solution—because no single system wins every matchup.

Frequently Asked Questions

What Filtration System Is Most Effective?

We've found reverse osmosis systems are the most effective — the APEC ROES-50 achieved near-perfect contaminant removal, eliminating arsenic, lead, fluoride, and PFAS with a Critical Contaminant Removal score of 10.0.

What Contaminants Is Filtration Capable of Removing?

We've got your back across the board — our filtration systems tackle chlorine, lead, arsenic, fluoride, nitrates, PFAS, heavy metals, bacteria, viruses, protozoa, VOCs, and hardness minerals, depending on which system you choose.

What Are the Four Different Filtration Systems?

We've got four filtration systems working for you: carbon filtration, reverse osmosis, ion-exchange softeners, and UV sterilization—each targeting specific contaminants so you're always drinking the cleanest, safest water possible.

How Do Water Filters Remove Contaminants?

We remove contaminants through four proven mechanisms: carbon adsorption traps chemicals, reverse osmosis blocks dissolved solids, mechanical filtration strains particles, and ion exchange swaps harmful minerals—often combining all stages for thorough protection you can trust.