Three ways to filter your water.
Pitchers, countertop purifiers, and gravity systems ask for different routines. The useful differences are the ones you will manage every day.
What this comparison covers.
We are comparing the Brita Tahoe OB60 pitcher with an Elite OB06 filter, the standard AquaTru Classic with its VOC filter, and a six litre British Berkefeld gravity format with two Ultra Sterasyl elements. Each takes a different approach. This documentation review remains open. We have not used these products or tested them in a laboratory, and we have not chosen a best overall filter.
New to filter claims? Our water filtration guide explains what to check before shopping.
How the three formats differ.
Product image: Brita. Used for identification and editorial comparison.
Pitcher or dispenser
Brita Tahoe with Elite
The OB06 cartridge offers a familiar refill and pour format. Brita reports microplastics reduction and a 120 gallon replacement interval. Its sheet and the WQA host list do not fully match for the Tahoe model; see the evidence notes below.
Check first: the OB60 pitcher and OB06 cartridge on the package. Tahoe is also sold with other cartridges.
Product image: AquaTru. Used for identification and editorial comparison.
Countertop reverse osmosis
AquaTru Classic
A powered system with separate filter stages and a refillable tank. We verified a microplastics reduction entry for its AT2000 through AT2050 model family in IAPMO file W-10195. Check the model label and replacement filter before buying.
Check first: your model number, water hardness, and room for refilling and cleaning.
Product image: Doulton and British Berkefeld. Used for identification and editorial comparison.
Gravity filtration
British Berkefeld
Our earlier NSF directory review identified SS2 Ultra Sterasyl with element W9121226 for Microplastics Reduction under NSF/ANSI 401. We could not refresh that directory entry during this update.
Check first: that exact system and cartridge combination, refill capacity, and a reliable supplier for replacement elements.
The practical differences.
Swipe to compare all three products.
| Detail | Brita Elite OB06 | AquaTru Classic | Berkefeld SS2 Ultra Sterasyl |
|---|---|---|---|
| Daily routine | Refill a compatible pitcher or dispenser. | Refill, run the powered system, and discard remaining concentrate as directed. | Refill the upper chamber and allow gravity filtration. |
| Replacement planning | Manufacturer rates OB06 at 120 gallons, about six months; water conditions can affect the interval. | AT2001: six months or 600 gallons. AT2002 membrane: 24 months or 1,200 gallons. AT2003 VOC: 12 months or 600 gallons. Whichever comes first. | Manufacturer’s Ultra Sterasyl table recommends six months. Confirm the instructions supplied with your configuration. |
| Evidence reviewed | Brita’s sheet reports 99.6% microplastics reduction in the 0.5 to 1 micrometre test range and names Tahoe OB60. The WQA NSF/ANSI 401 entry checked October 24 lists OB06 with specified host systems, but omits OB60. We have not confirmed the certified claim for this Tahoe configuration. | IAPMO file W-10195, current October 24, lists microplastics under NSF/ANSI 401-2020 for AT2000, AT2010, AT2020, AT2030, AT2040 and AT2050, with AT2003 or AT2004 replacement components and a 600 gallon capacity. Match the purchased model and filter to that entry. | Earlier NSF review recorded SS2 / W9121226 and its microplastics claim. A fresh directory check and a match to the retail chamber remain pending. |
| Materials | Brita describes the cartridge housing as made without BPA. This does not establish a free of plastic water path. | Complete water contact material inventory not verified. | The US seller describes stainless steel chambers and a plastic spigot in the base package. Seals and the complete water contact inventory remain unverified. |
| Cost comparison | Price the compatible container plus genuine replacement cartridges. | Price the system plus all replacement stages and operating costs. | Price the exact system, installed element count, and replacements. |
Keep the claim within its limits.
A microplastics reduction claim is useful when it names the system, cartridge, and test conditions. It does not establish removal of every particle size, including nanoplastics, or guarantee a particular health outcome.
For AquaTru, the linked sheet reports 96.48% average reduction for its specified microplastics test. That is a laboratory result for the listed models and conditions. We are not using it to rank everyday performance against the other systems.
NSF’s Berkefeld listing also notes that a rated service cycle capacity does not apply to mechanical filtration. Keep replacement instructions separate from assumptions about how long a particle reduction claim lasts.
Scores stay internal while documentation gaps remain.
We organized the available material details, water contact, use conditions, and evidence quality. The findings remain provisional until the documentation gaps are resolved.
PEI is a comparison tool. It is not a safety rating, a toxicity finding, or a medical conclusion.
Choose a system you can maintain.
A refillable pitcher may suit a small daily volume. A powered countertop system adds more stages to manage. A gravity unit asks you to plan for refill space and waiting time.
Before choosing, write down how much water you use, where the system will sit, and who will clean it. Then check the exact product instructions. Those answers can narrow the field more usefully than a long list of advertised contaminants.
Open documentation questions.
- Resolution of the Brita sheet versus WQA host list discrepancy for Tahoe OB60, and an exact retail model number match to AquaTru’s verified IAPMO entry.
- Complete water contact materials, including seals, spouts, tanks, and tubing.
- A direct match between the US Berkefeld retail chamber and the SS2 certification entry. Seller pages also give inconsistent gallon capacities, so we have not used those capacities to extend replacement life.
- Cleaning instructions, replacement availability, and the right capacity for each household.
Have a current model document or a correction? Send it to [email protected].
Three year budget examples.
These US dollar examples use prices checked October 24, 2026 and half a US gallon of filtered water per day. Each starts with a new system and its included filters. Replacements occur at months 6 through 30; a change at month 36 belongs to the next period.
Swipe to compare the budget examples.
| Configuration | New system | Replacement purchases | Three year budget |
|---|---|---|---|
| Brita Tahoe OB60, one Elite OB06 included | $41.99 | Five cartridges: two packs of two at $32.99, plus one at $19.99. Replacement cost $85.97. | $127.96 |
| AquaTru Classic Only, standard VOC option | $475.00, including one of each filter | Five pre/carbon filters at $29.95, two VOC filters at $39.95, and one RO filter at $59.95. Replacement cost $289.60. | $764.60 |
| Berkefeld Duchess, six litre format, SKU W9361136, two Ultra Sterasyl elements included | $255.00 sale price | Five pairs at the displayed $84 price per pair. Replacement allowance $420.00. | $675.00 |
The Brita example uses a six month planning interval, with earlier replacement at 120 gallons. At our assumed use, six months is about 91 gallons. At one gallon daily, the 120 gallon limit arrives in about four months and the budget rises.
The AquaTru example uses six months or 600 gallons for pre/carbon, twelve months or 600 gallons for VOC, and twenty four months or 1,200 gallons for RO, whichever comes first. It uses individual replacement prices and excludes subscriptions and bundle discounts.
The Berkefeld allowance replaces both elements every six months. Its replacement page offers both one time and subscription purchasing; confirm the $84 pair price and chosen option before ordering. We have not used conflicting seller gallon ratings to lengthen the schedule. The $255 base system includes a plastic spigot; the seller lists a stainless steel option separately at $23.
All examples exclude tax, shipping, cleaning supplies, repairs, water, and electricity. Actual water conditions or product instructions may require earlier changes. Price differences do not show which product is safer or filters better.
Price sources: Brita Tahoe, Elite cartridges, AquaTru Classic, pre/carbon, VOC, RO, Berkefeld Duchess, and Ultra Sterasyl pair.
Sources and editorial notes
Initial research October 10, 2026. Retail configurations, replacement budgets, materials notes, and WQA and IAPMO directory checks updated October 24, 2026. Brand claims are attributed above; remaining verification gaps are explicit. Product configurations and certification listings can change.
- Brita Elite OB06 product documentation and complete OB06 performance data sheet.
- AquaTru Classic product page and its linked countertop performance data sheet, revision 10.24.R4.
- NSF microplastics reduction directory, Doulton Water Filters entry.
- WQA OB06 NSF/ANSI 401 entry and host footnotes; IAPMO W-10195 certificate.
- Doulton filter testing and maintenance table.
Read our Methodology and Affiliate Disclosure. This comparison contains no affiliate purchase links or sponsored placements. Educational information; follow local water advisories and product instructions.