Investigation #001 / Water / Under-sink filtration

Aquasana Claryum 3-Stage Max Flow

A genuinely certified filter that's a strong pick for the right city-water home — as long as you install it carefully and keep an eye out for leaks.

VerdictConditional74 / 100

Home Resilience verdict

Recommended for a city-water household focused on taste, lead, PFAS, cysts, or microplastics, with careful installation and leak checks.

Editorial illustration.

Where it's strong

Aquasana's performance data sheet shows testing to NSF/ANSI 42, 53, and 401, plus WQA certification — and the certified reductions are real: PFOA/PFOS at 99.7%, microplastics at 99.6%, cysts at 99.995%, chlorine at 97.3%, and chloramine at 91%. Rated for 800 gallons at 0.72 GPM.

If you're on municipal water and worried about chlorine or chloramine taste, lead, PFAS, cysts, microplastics, or pharmaceuticals, this is squarely the problem it's built to solve — and it keeps your minerals and skips reverse-osmosis wastewater doing it.

Choose something else if you need

Fluoride, arsenic, nitrates, or high TDS removed. A properly certified reverse-osmosis system is the right tool here.
Hard-water scale handled. This isn't a softener and won't stop mineral buildup.
Untreated well water made safe. It isn't certified to treat bacteria or viruses.

That's not a knock on the filter — it's just not what this one is for.

The leak reports you should know about

Owners report a recurring issue worth planning around: leaks, including around filter changes. We read that as an owner-reported pattern rather than a proven manufacturing defect, but it comes up often enough, and the consequences are serious enough, to shape the verdict.

How to stay ahead of it: install carefully, leak-check after every filter change, and put a drip tray or an inexpensive leak sensor underneath the system.

What it costs to own

Replacement filters run $91.99 at list, or $78.19 on Aquasana's Water for Life pricing. Changing them every six months puts your annual filter cost around $184 at list, or roughly $156 on the subscription.

The right buyer

You're on municipal water with concerns like chlorine or chloramine taste, lead, PFAS, cysts, microplastics, or pharmaceuticals.
You want to keep minerals in your water and avoid reverse-osmosis wastewater.
You're happy to install carefully and do a quick leak check after each filter change.

What we checked

Aquasana's AQ-6300M performance data sheet, for the certifications and reduction figures.
Aquasana's product pages, for configuration-dependent pricing.
Replacement-filter pricing (AQ-C3M-R): $91.99 list, $78.19 on Water for Life.
Recurring owner reports across current retailer and review sources — read as a signal, not proof of a defect.

All rechecked Aug 30, 2026.