Water filter · ro
AquaTru Classic Countertop RO
A no-plumbing countertop 4-stage RO purifier certified to NSF standards for lead, PFAS, fluoride and arsenic with an efficient drain ratio.
Total cost of ownership
- Cost / gallon
- $0.287
- ~Annual filters
- $316/yr
- RO waste
- 0.25:1
Certifications
- NSF/ANSI 42, 53, 58, 401, P473lead, PFOA, PFOS, fluoride, arsenic, chromium-6, nitrates, VOCs
Overview
The AquaTru Classic Countertop RO is a ro water filter. It is third-party certified (IAPMO) to reduce lead, PFOA, PFOS, fluoride, arsenic, chromium-6, nitrate, chlorine taste and odor, chloramine, VOCs. It is also marketed for microplastics, for which we found no accredited third-party certification (so we award no certification credit; this is not a finding that it fails to reduce them). Running cost works out to about $0.287 per gallon.
By the numbers
- Certified to reduce
- lead, PFOA, PFOS, fluoride, arsenic, chromium-6, nitrate, chlorine taste and odor, chloramine, VOCs
- Marketed, no certification found
- microplastics
- Format
- ro
- Cartridge life
- 600 gallons
- Cost per gallon
- $0.287
- Annual filter cost (~1,100 gal)
- $316/yr
- RO wastewater ratio
- 0.25:1 (reject:produced)
- Install
- countertop, no plumbing; refillable tank
- Certifications
- IAPMO NSF/ANSI 42, 53, 58, 401, P473
Strengths
- + Verified Contaminant Reduction: 10.0/10
- + Certification Independence: 8.0/10
- + Capacity & Flow Fit: 10.0/10
Watch-outs
- - Total Cost of Ownership: 1.0/10
Who it is for
- · Homes with lead service lines or older plumbing (certified for lead)
- · Anyone targeting PFAS (certified for PFOA/PFOS)
- · Households needing broad dissolved-contaminant reduction (TDS, etc.)
Who should skip it
- · Heavy daily use - cost per gallon is high
What to know before buying
- · It is a countertop reverse osmosis unit needing no plumbing; you fill a tap-water tank and it produces filtered water into a separate tank, plugged into a standard outlet.
- · It uses three filters on different schedules: a Pre/Carbon filter (about 6 months), the RO membrane (about 2 years), and a VOC Carbon filter (about 1 year).
- · As a reverse osmosis unit it discharges some water to waste during filtration.
How it scored
Verified Contaminant Reduction
10.0/10 · 35%Held NSF/WQA/IAPMO certifications for the contaminants that matter. A claim is not a certification.
- +3NSF/ANSI 53 certified for lead ANSF/53 lead - Independently certified to reduce lead under NSF/ANSI 53.
- +3Certified for PFAS (P473 or 53+401) APFOA/PFOS certified - Independently certified to reduce PFOA/PFOS.
- +1NSF/ANSI 42 certified for chlorine ANSF/42 chlorine - Certified to reduce chlorine taste and odor.
- +2NSF/ANSI 401 emerging contaminants ANSF/401 - Certified for emerging contaminants such as pharmaceuticals.
- +1NSF/ANSI 58 RO certified ANSF/58 - Reverse-osmosis system certified under NSF/ANSI 58.
Total Cost of Ownership
1.0/10 · 25%Computed cost per gallon vs the format-class median. The number nobody surfaces.
- 0Cost per gallon vs class median A$0.287/gal (above class median (expensive to run)) - Computed cost per gallon scored against the format-class median.
- +1Efficient RO wastewater ratio B0.25:1 reject:produce - Rejects 2 gallons or fewer per gallon produced.
Certification Independence
8.0/10 · 15%Certified on the official database vs self-claimed 'tested to' marketing.
- +5Certifications verifiable on official database A1 listings - Certifications are listed on the official NSF/WQA/IAPMO database, not just a logo.
- +3Per-contaminant reduction disclosed Bperformance data sheet - Publishes percent reduction per contaminant at rated capacity.
- ·Marketing exceeds certified scope Aclaims beyond certified scope - Marketing emphasizes contaminants the certifications do not cover.
Capacity & Flow Fit
10.0/10 · 15%Cartridge life and flow appropriate to the format.
- +3Cartridge life fits the format B600 gal (norm 300) - Rated cartridge life is appropriate for this filter format.
- +3Flow / storage disclosed and adequate B0.75 gal tank - Flow rate or RO storage is disclosed and adequate for the format.
- +2Sediment pre-filter present Bsediment pre-filter - Includes a sediment pre-filter for well or hard-water sources.
- +2Honestly rated filter life Bgallon rating matches typical use - Months claim matches the gallon rating at typical use.
Practical Fit
7.0/10 · 10%Install, footprint, and source-water readiness.
- +5Install type disclosed Ccountertop, no plumbing; refillable tank - Install method and difficulty are disclosed up front.
- +2Predictable replacement schedule Chonest life rating - Replacement schedule is predictable from the honest gallon rating.
FAQ
- Does the AquaTru Classic require installation or a plumber?
- No. It sits on the counter and runs off a wall outlet with refillable tanks, so there is no connection to your plumbing.
- How often do the filters need replacing?
- The Pre/Carbon filter about every 6 months, the VOC Carbon filter about every year, and the RO membrane about every 2 years.
Related guides
This score is our opinion under our published rubric, not a statement of objective fact or a lab test of this product. We score what third-party certifications prove; absence of a certification means we found no verification, not that a product fails to perform. Last reviewed 2026-06-01. Scored under water-v1.0. Prices and certifications are re-verified on a cadence; see the methodology for how each rule fires.