Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
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Under-sink reverse osmosis with a tank and remineraliser, WQA-certified to NSF/ANSI 42, 53 (including protocol P473 for PFOA/PFOS), 58 and 401. Sold in the United States, 224.99 USD observed. Plain link, partner link pending.
Where to buy
No buy link for this market; the seller does not deliver here or has not supplied a link.
List price seen on 19 September 2026: US$224.99 (was US$449.99). Prices change; the store's price is the one that counts. $200 to $500.
What this filter does and does not do
The honest summary to read before buying:
- Sold and delivered in the United States only by the linked store; promotional price seen on September 19, 2026 (MSRP 449.99 USD).
- The PFAS certification covers PFOA and PFOS (protocol P473); other PFAS are not certified and the percentage sits on the performance data sheet, not repeated here.
- Under-sink installation with a dedicated faucet, a storage tank and a drain connection; no electricity.
- Plain link, no commission: the US affiliate link is not live yet.
This comparison is a buying aid, not medical advice. The PFAS in your water are on your city's page; this site compares results with its 0.5 ng/L health benchmark for the sum of PFOA + PFOS + PFNA + PFHxS and with the 4 ng/L legal reference. No certified filter guarantees reaching those values.
PFAS reduction
| PFAS (PFOA/PFOS) | WQA tested and certified to NSF/ANSI 53 including protocol P473, the PFOA and PFOS reduction claim Source: https://www.aquasana.com/reverse-osmosis-water-filters/smart-flow-reverse-osmosis/chrome-100385796.html (retrieved 19 September 2026)
WQA tested and certified to NSF/ANSI Standards 42, 53 (includes P473), 58, 401, and CSA B483.1. The NSF/ANSI 53 certification is to the updated, stricter standard for more comprehensive protection against PFOA/PFOS. |
|---|---|
| Type of evidence | Independent certification P473 is the NSF/ANSI 53 PFOA/PFOS protocol US regulators point to. The certified reduction percentage is on the performance data sheet (AQ-SFRO2_Performance_Data.pdf, linked from the page) and is not quoted here because the sheet could not be read as text at build. |
| Substances covered | PFOA, PFOS |
Certifications and tests
| Standard | Status | Body | What the standard covers | Published claims |
|---|---|---|---|---|
| NSF/ANSI 53 | Certified | WQA | Health effects: the claims on the performance data sheet, including protocol P473 (PFOA and PFOS reduction). The page links the performance data sheet (https://www.aquasana.com/on/demandware.static/-/Sites-aquasana-Library/default/dwce98d716/PDF/AQ-SFRO2_Performance_Data.pdf); the PDF was downloaded on 2026-09-19 but its text could not be extracted on the build machine, so the per-substance reduction percentages are not quoted. The WQA Gold Seal listing itself was not read. | PFOA/PFOS (P473), lead, cysts, asbestos, VOCs, mercury Source (retrieved 19 September 2026) |
| NSF/ANSI 58 | Certified | WQA | Reverse osmosis systems: TDS reduction and the health-related claims on the performance data sheet. The page states that the system is WQA tested and certified to reduce fluoride; the figure is on the performance data sheet and is not repeated here. | TDS, fluoride, arsenic, nitrates, radium Source (retrieved 19 September 2026) |
| NSF/ANSI 42 | Certified | WQA | Aesthetic effects: chlorine taste and odour. | chlorine Source (retrieved 19 September 2026) |
| NSF/ANSI 401 | Certified | WQA | Emerging contaminants and incidental compounds (pharmaceuticals, BPA, herbicides) listed on the performance data sheet. | BPA, nonylphenol, TCEP, TCPP Source (retrieved 19 September 2026) |
| CSA B483.1 | Certified | WQA | Canadian standard for drinking water treatment systems (materials and structural integrity). | – Source (retrieved 19 September 2026) |
The facts
| Type | Under-sink reverse osmosis. Four-stage under-sink reverse osmosis with a storage tank: carbon block, SmartFlow RO membrane, Claryum activated and catalytic carbon with ion exchange and sub-micron filtration, remineraliser. Membrane 51.4 GPD, 0.7 gpm at the dedicated faucet, no electricity. |
|---|---|
| Other contaminants claimed | fluoride, arsenic, lead, chlorine, cysts, microplastics, VOCs, BPA, mercury, nitrates |
| Capacity | 25.7 gallons a day (about 97 L) from a 51.4 GPD membrane into a storage tank; 0.7 gpm at the faucet |
| Cartridge changes |
|
| Estimated running cost | no euro price Two carbon stages and the remineraliser every 6 months, the membrane every 12 months; US prices only, no euro price exists for the US store. |
| Installation | Under sink, DIY · No electricity Under-sink connection to the cold water line and the drain, a hole for the dedicated faucet, and room for the storage tank (13.74 by 9.06 inches); no electricity. |
| Price | $200 to $500. List price seen on 19 September 2026: US$224.99 (was US$449.99). Prices change; the store's price is the one that counts. |
| Where it is delivered | United States Sold on the brand's US store (aquasana.com); free shipping thresholds not verified. Not sold in Europe. Source (retrieved 19 September 2026) |
How we checked
- US product page read on 2026-09-19: 'WQA tested and certified to NSF/ANSI Standards 42, 53 (includes P473), 58, 401, and CSA B483.1'; sale price 224.99 USD against a 449.99 USD MSRP; model AQ-SFRO2-CHR, item 100385796; filter intervals 6 and 12 months; 51.4 GPD membrane, 25.7 gallons a day.
- Performance data sheet PDF downloaded the same day (HTTP 200, 135 kB) but not machine-readable here; percentages therefore not quoted. Matches docs/affiliate-country-matrix.md section 8 (2026-09-19).
Sources
- https://www.aquasana.com/reverse-osmosis-water-filters/smart-flow-reverse-osmosis/chrome-100385796.html (retrieved 19 September 2026)
Data checked on 19 September 2026. The records were prepared with the help of AI from the manufacturers' pages and documents, then every figure was re-read at the source named.