Brita's Elite holds NSF/ANSI 42, 53 and 401 certifications covering lead. Clearly Filtered publishes independent testing against NSF 42, 53, 401 and P473 across a far wider contaminant list. The choice is certified-and-narrow against tested-and-broad.
Quick picks
Tap any row to jump to the full write-up. The button goes straight to the retailer.
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | CFno photoClearly Filtered Water Pitcher (Affinity)Tested to NSF 42/53/401/P473 across 386+ contaminants including PFAS and fluoride. | If you want breadth | Check price on Amazon #ad We do not show a price we cannot verify today. We may earn a commission. Disclosure. |
| 2 | Bno photoBrita Elite Filter (with any Brita pitcher)Certified to NSF/ANSI 42, 53 and 401, at a fraction of the filter price. | If you want a listing | Check price on Amazon #ad We do not show a price we cannot verify today. We may earn a commission. Disclosure. |
| 3 | Ano photoAquaTru Classic Countertop Reverse Osmosis PurifierCertified AND broad — reverse osmosis to NSF/ANSI 53, 58, 401 and P473, no plumbing. | If you want both | Check price on Amazon #ad We do not show a price we cannot verify today. We may earn a commission. Disclosure. |
Two different kinds of evidence
This comparison is unusual because the products are not really competing on performance. They are competing on what kind of proof you want.
| Brita Elite | Clearly Filtered | |
|---|---|---|
| Evidence type | Certification listing | Independent test results |
| Standards | Certified to NSF/ANSI 42, 53, 401 | Tested to NSF/ANSI 42, 53, 401, P473 |
| Ongoing surveillance | Yes | No |
| Publicly listed | Yes, in a certification directory | In the manufacturer's published data |
| Lead | Certified | Tested |
| PFOA / PFOS | Not certified | Tested |
| Fluoride | Not claimed | Tested |
| Contaminants claimed | The certified list | Up to 99.99% of 386+ |
| Rated filter life | 120 gallons | 100 gallons |
| Filter price | Low | High |
What certification buys you
A certification listing means a body verified the claim, lists the product publicly, and maintains ongoing surveillance testing. If you need to point somebody else at evidence — a landlord, a lender, a health directive — that is what they will accept.
It also means the claim is narrower, because certifying every contaminant is expensive. Brita certified what it built the filter to do.
What testing buys you
A far wider claim list, including PFAS and fluoride, which the certified pitcher does not cover at any price. The testing is genuine and independent, run against the standards' own methods and published.
What it does not include: a maintained listing, ongoing surveillance, or an entry in a public directory you can check yourself.
Our position
Both are defensible purchases. What is not defensible is buying one while believing it is the other, which is exactly what the marketing language across this industry encourages — "tested to NSF standards" and "NSF certified" are used in ways that sound interchangeable and are not.
- Need lead, want a listing, want it cheap: Brita Elite. It is certified and it is a fraction of the price.
- Need PFAS or fluoride in a pitcher: Clearly Filtered, because Brita does not cover either. Understand that you are buying test data.
- Need PFAS AND a certification listing: neither of these. ZeroWater is certified for PFAS in a pitcher, and certified reverse osmosis covers everything.
The practical differences
Flow. Clearly Filtered is the slowest pitcher we cover. That is the inevitable consequence of a dense composite block catching a wide contaminant list, and it is not a defect.
Price per gallon. Closer than the sticker prices suggest — 100 rated gallons against 120 — but Clearly Filtered's much higher filter price still makes it the more expensive option to run.
Availability. Brita filters are in every supermarket. Clearly Filtered is ordered.
The cost-per-gallon math
At two gallons a day and 730 gallons a year: about six Brita Elite filters, or about seven Clearly Filtered ones. The replacement cadence is close.
The cost difference is therefore almost entirely the price per filter, and Clearly Filtered is substantially more expensive per unit.
So the premium is real and what it buys is the claim list — PFAS and fluoride coverage Brita does not offer at any price. If you do not have those contaminants, buy the certified filter and keep the difference. Paying for coverage you do not need is buying reassurance rather than filtration.
We show the arithmetic rather than a verdict so you can redo it with the price you actually pay. Filter prices move; the rated capacities above do not.
The picks in full
If you want breadth
Clearly Filtered Water Pitcher (Affinity)
Clearly Filtered
The broadest claim list of any pitcher we list, and the one that needs the most careful reading: it is independently tested to NSF standards, not certified by a listing body. That distinction is the whole decision.
Certification status
Independently tested against NSF/ANSI 42, 53, 401 and P473. That is testing to the standards' methods, not a third-party certification listing under them — the difference is who stands behind the claim and whether it is subject to ongoing surveillance.
Published specifications
| Capacity | 80 oz / 10 cups |
|---|---|
| Rated filter life | Up to 100 gallons / about 4 months |
| Filtration | 3-stage: stainless mesh, coconut carbon, Affinity composite shell |
| Standards tested against | NSF/ANSI 42, 53, 401, P473 |
| Manufacturer claim | Up to 99.99% of 386+ contaminants |
| Housing | Tritan, BPA-free |
What we like
- Addresses PFAS and fluoride, which most certified pitchers do not touch
- 100-gallon rated life is far longer than ZeroWater's
- Published test data covers an unusually wide contaminant list
What we do not
- Tested to NSF standards, not certified under them — a weaker form of assurance
- Highest sticker price in the pitcher tier
- Flow is slow even by pitcher standards
Skip it if
Anyone who needs a certification listing for a specific contaminant — for a landlord, a lender, a health directive, or their own peace of mind. If the listing is what you need, buy a certified product instead.
#ad We do not show a price we cannot verify today. We may earn a commission. Disclosure.
Where these specifications came from
If you want a listing
Brita Elite Filter (with any Brita pitcher)
Brita
The cheapest route to an NSF/ANSI 53 lead certification. It drops into a pitcher most households already have, and it is emphatically not the same filter as the white Brita Standard.
Certification status
Certified to NSF/ANSI 42, 53 and 401. The lead certification belongs to the Elite (blue) filter only — the Standard (white) filter is certified to NSF/ANSI 42 for taste and odor and is not certified for lead. Per Brita's January 2026 performance data sheet the Elite is not certified for PFOA or PFOS, and no Brita pitcher filter is certified for fluoride.
Published specifications
| Rated filter life | 120 gallons / about 6 months |
|---|---|
| Standard filter life, for comparison | 40 gallons / about 2 months |
| Certified standards | NSF/ANSI 42, 53, 401 |
| Lead | Certified under NSF/ANSI 53 |
| PFOA / PFOS | Not certified (January 2026 performance data sheet) |
| Fluoride | Not certified, not claimed |
What we like
- Genuine NSF/ANSI 53 lead certification at the lowest entry price of anything on this site
- Fits Brita pitchers and dispensers already in millions of kitchens — no new hardware
- Three times the rated life of the Standard filter, which changes the cost-per-gallon math
What we do not
- Not certified for PFOA or PFOS, so it is the wrong answer to a PFAS worry
- No fluoride claim at all
- Slow gravity flow, like every pitcher
Skip it if
Anyone whose actual worry is PFAS or fluoride. The Elite is not certified for either, and buying it for those is buying the wrong thing.
#ad We do not show a price we cannot verify today. We may earn a commission. Disclosure.
Where these specifications came from
If you want both
AquaTru Classic Countertop Reverse Osmosis Purifier
AquaTru
Reverse osmosis performance with no plumbing, no drilling and no landlord conversation. You pay for that with counter space, a wait, and two tanks you fill and empty by hand.
Certification status
Certified by IAPMO to NSF/ANSI 53, 58, 401 and P473, covering lead, reverse-osmosis performance, emerging compounds and the PFOA/PFOS protocol.
Published specifications
| Filtration | 4-stage countertop reverse osmosis |
|---|---|
| Clean water tank | 0.75 gallons |
| Tap water tank | 1 gallon |
| Installation | None — no plumbing connection |
| Certified standards | NSF/ANSI 53, 58, 401, P473 (IAPMO) |
What we like
- Real reverse osmosis with a P473 PFOA/PFOS certification and zero installation
- The strongest answer available to a renter with a lead or PFAS problem
- No drilling, no drain saddle, no landlord permission needed
What we do not
- Takes up substantial counter space
- You refill and empty tanks by hand — it is not on-demand
- Highest purchase price in the no-plumbing tier by a wide margin
Skip it if
Anyone who can plumb in an under-sink system. A permanent under-sink RO is cheaper per gallon, on-demand, and out of sight. Buy this when you genuinely cannot install.
#ad We do not show a price we cannot verify today. We may earn a commission. Disclosure.
Where these specifications came from
Questions people actually ask
Is Clearly Filtered NSF certified?
No. It is independently tested against NSF/ANSI 42, 53, 401 and P473 methods, which is real published evidence but not a maintained certification listing. The company states this accurately; the distinction is easy to read past.
Which removes more contaminants?
Clearly Filtered publishes a far wider claim list, including PFAS and fluoride that Brita does not cover. The trade is that its evidence is test data rather than a certification listing with ongoing surveillance.
Is Clearly Filtered worth the extra money?
Only if you need PFAS or fluoride coverage. On lead alone the Brita Elite is certified, cheaper, and comparable on cost per gallon. Buy the broader filter for a broader problem, not for the feeling of having bought the better one.
Which is faster?
Brita, clearly. Clearly Filtered is the slowest pitcher we cover, because catching a wide contaminant list requires a dense media block and a dense block restricts flow. The slowness and the claim list are the same design decision.