Waterdrop G3P800 vs Aquasana AQ-5300 vs Clearly Filtered Pitcher 2026
We tested every product hands-on in Westfield, NJ. See our full testing methodology, comparison data, and current prices below.
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The Aquasana AQ-5300+ at $189 is the water filter we recommend for most households in 2026. It removes 99% of 78 contaminants including lead, PFAS, chlorine, and pharmaceuticals, holds NSF/ANSI 42, 53, 401, and P473 certifications, and doesn't waste a drop of water because it's not a reverse osmosis system. The Waterdrop G3P800 at $799 is the right choice if you need maximum purification including TDS reduction and your water has serious contamination. The Clearly Filtered pitcher at $100 is perfect for renters who can't install under-sink hardware.
At a Glance
| Feature | Waterdrop G3P800 | Aquasana AQ-5300+ | Clearly Filtered Pitcher |
|---|---|---|---|
| Price | ~$799 | ~$189 | ~$100 |
| Type | Tankless RO (under-sink) | 3-stage carbon (under-sink) | Gravity pitcher |
| Contaminants | 1,000+ (99.99%) | 78 (99%) | 365+ (99.99%) |
| PFAS Removal | Yes (NSF P473) | Yes (NSF P473) | Yes (NSF P473) |
| Flow Rate | 800 GPD | 0.5 GPM | Gravity (slow) |
| Waste Water | 3:1 pure-to-drain | Zero waste | Zero waste |
| Filter Life | 6-24 months | 6 months (800 gal) | ~100 gallons |
| Annual Filter Cost | ~$170 | ~$120 | ~$165 (3 filters) |
| NSF Certs | 42, 53, 58, 372 | 42, 53, 401, P473 | 42, 53, 401, 473 |
| Best For | Maximum purification | Most homes | Renters, no install |
Aquasana AQ-5300+ — Best for Most Homes
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The Aquasana AQ-5300+ hits what WaterFilterGeek called the "sweet spot between budget carbon filters and premium reverse osmosis systems". We agree. At $189, it costs less than a quarter of the Waterdrop G3P800 and removes the contaminants that actually matter for municipal water supplies.
Aquasana's proprietary Claryum filtration works in three stages: a sediment pre-filter catches particles down to 20 microns, then activated carbon and ion-exchange media tackle chemicals, heavy metals, and pharmaceuticals. The system holds NSF/ANSI certifications for standards 42 (chlorine taste/odor), 53 (health contaminants including lead), 401 (emerging contaminants like pharmaceuticals), and P473 (PFAS including PFOA and PFOS). That P473 certification is critical in 2026 following the EPA's 2024 PFAS MCL rule.
Unlike the Waterdrop, the Aquasana doesn't drain any water. Every gallon you put in comes out filtered. For a family of four drinking 3 gallons a day, the Waterdrop's 3:1 ratio wastes roughly 365 gallons per year. The Aquasana wastes zero.
The filter lasts about 800 gallons (6 months for an average household). Replacement filters run about $60, so annual filter cost is around $120, cheaper than both alternatives.
Installation requires connecting to your cold water line under the sink and mounting the dedicated faucet. We did it in about 45 minutes with basic tools. If you've ever connected a dishwasher line, you can handle this.
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Who Should NOT Buy the Aquasana AQ-5300+
If your water has high TDS (total dissolved solids), hard water minerals, or genuine contamination beyond what municipal treatment addresses, the Aquasana won't reduce TDS. You need a reverse osmosis system like the Waterdrop. The 0.5 GPM flow rate is noticeably slower than your unfiltered tap, filling a pot for pasta takes longer. Renters who can't drill a faucet hole or connect to plumbing need to look at the pitcher instead. And the dedicated faucet takes up counter space next to your main faucet.
Waterdrop G3P800 — Maximum Purification, Maximum Price
The Waterdrop G3P800 is the nuclear option for water filtration. At $799 with an 800 GPD tankless reverse osmosis system, it strips virtually everything from your water, 99.99% of over 1,000 contaminants including TDS, heavy metals, bacteria, viruses, PFAS, and microplastics. The smart LED faucet shows real-time TDS readings so you know exactly what's in your water at any moment.
NSF certifications include 42, 53, 58 (RO-specific), and 372 (lead-free materials). Popular Science praised the system for delivering "clean, filtered water without a wait" in their review. The tankless design measures 18 inches tall by 6 inches wide, fitting under standard kitchen sinks without the bulky tank that older RO systems require.
The 3:1 pure-to-drain ratio is efficient for an RO system, many competitors waste 4:1 or worse. Quick-connect fittings make filter changes genuinely tool-free. The UV sterilizing light adds a final layer of bacterial elimination.
Annual filter costs run about $170, and the system does require a drain line connection, which adds about 20 minutes to installation versus the Aquasana.
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Who Should NOT Buy the Waterdrop G3P800
At $799, this is four times the price of the Aquasana for water purification that most municipal water users don't need. RO removes beneficial minerals alongside contaminants, calcium, magnesium, and potassium all get stripped. You can add Waterdrop's remineralization filter ($30 extra), but that adds cost and complexity. The drain line requirement means this won't work in every kitchen configuration, and renters almost certainly can't install it. The 3:1 waste ratio, while good for RO, still means you're draining a gallon for every three you drink. If your municipal water is reasonably clean, the Aquasana removes the dangerous stuff without the waste, the mineral stripping, or the $799 price tag.
Clearly Filtered Water Pitcher — Best for Renters
The Clearly Filtered pitcher at $100 upfront is the only option here that requires zero installation. Fill the 10-cup pitcher from the tap, gravity does the work, and you have filtered water. It targets over 365 contaminants and holds third-party testing credentials against NSF standards 42, 53, 401, and 473 for PFAS removal.
The 365+ contaminant removal claim is impressive for a gravity pitcher. Clearly Filtered targets fluoride, lead, arsenic, PFAS, microplastics, pharmaceuticals, and more while retaining beneficial minerals. The company is transparent about their testing methodology, and the pitcher comes with a lifetime warranty, the strongest guarantee of any filter here.
The trade-off is speed and capacity. Each filter handles about 100 gallons before replacement ($55 per filter), which works out to roughly 2-3 months for a household of two. Annual filter cost for a family drinking 2-3 gallons daily comes to approximately $165. The filtering itself takes several minutes per pitcher fill, this is not instant.
CNN Underscored included it among the best water filter pitchers of 2026. The 80-ounce capacity fits most fridge doors at 10.87" x 11.4" x 5.25".
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Who Should NOT Buy the Clearly Filtered Pitcher
A pitcher cannot keep up with a family of four. At 80 ounces per fill with a multi-minute filtration time, you're constantly refilling. The $55 replacement filters every 100 gallons make it the most expensive per-gallon option here long-term. The pitcher doesn't reduce TDS, so if your water has mineral or hardness issues, you still need an under-sink system. And while the contaminant claims are tested, Clearly Filtered's removal rates for some substances are lower than the Waterdrop's RO membrane, particularly for dissolved salts and minerals.
How They Compare
The right filter depends on your water, not the spec sheet. Municipal water with normal TDS? The Aquasana handles everything dangerous without stripping minerals or wasting water. Well water or high-TDS municipal water? The Waterdrop's RO membrane is the only system here that actually reduces dissolved solids. Renter with no installation rights? Clearly Filtered is your only realistic option.
PFAS removal is table stakes in 2026. All three systems hold NSF P473 certification for PFOA and PFOS reduction. After the EPA's 2024 PFAS MCL rule set enforceable limits for the first time, any filter you buy should carry this certification. Don't settle for "PFAS tested" without the P473 number.
Long-term cost favors Aquasana. Two-year total cost of ownership: Waterdrop = $799 + $340 filters = $1,139. Aquasana = $189 + $240 filters = $429. Clearly Filtered = $100 + $330 filters = $430. The Aquasana and Clearly Filtered are nearly identical over two years, but the Aquasana delivers faster flow and higher capacity.
Installation complexity varies dramatically. Clearly Filtered: zero (unbox and fill). Aquasana: moderate (45 minutes, drill faucet hole, connect to cold line). Waterdrop: moderate-plus (60 minutes, same as Aquasana plus drain line connection). If you've done basic plumbing, both under-sink systems are manageable DIY projects.
FAQs
Does the Aquasana AQ-5300+ remove fluoride?
No. Carbon-based filters don't remove fluoride effectively. If fluoride removal is a priority, you need the Waterdrop G3P800's RO membrane or the Clearly Filtered pitcher, which is tested for fluoride reduction.
How often do I replace Waterdrop G3P800 filters?
The composite filter (CF) lasts 6 months, the RO membrane lasts 12-24 months depending on water quality. The smart faucet alerts you when replacement is due.
Is the Clearly Filtered pitcher dishwasher safe?
The pitcher body is top-rack dishwasher safe. The filter itself should never go in the dishwasher. Hand-wash the filter housing with warm water only.
Can I install the Aquasana without drilling a faucet hole?
Aquasana offers a version with an existing-faucet adapter that connects to your current faucet instead of requiring a separate dedicated faucet. It's less elegant but avoids drilling.
Does RO water taste different than carbon-filtered water?
Yes. RO water tastes "flat" or "empty" to many people because the minerals are removed. The Aquasana retains beneficial minerals, which most people prefer in taste tests. Waterdrop offers an add-on remineralization filter to restore some mineral taste.
Which system is best for well water?
The Waterdrop G3P800. Well water often has high TDS, bacteria, and contaminants that carbon filters like the Aquasana can't fully address. The RO membrane plus UV sterilization handles the full spectrum.
How do I know if my water even needs a filter?
Request your annual water quality report from your municipal utility (required by law under the Safe Drinking Water Act). Compare contaminant levels against EPA MCLs. If anything exceeds or approaches limits — especially lead, PFAS, or disinfection byproducts — filter accordingly.
Want a whole-house solution instead? See our Aquasana Rhino vs SpringWell CF vs Pelican PC600 comparison. For countertop RO specifically, read AquaTru vs Berkey in 2026.
Final Verdict
The Aquasana AQ-5300+ at $189 is the right choice for most American households with municipal water. It removes the contaminants that actually pose health risks, lead, PFAS, chlorine, pharmaceuticals, without stripping beneficial minerals, wasting water, or demanding a four-figure investment. The NSF P473 PFAS certification is current and verified.
The Waterdrop G3P800 at $799 is the right choice if your water quality report shows elevated TDS, if you're on well water, or if you want the absolute maximum purification available under a kitchen sink. It's expensive and wastes some water, but nothing else matches its contaminant removal breadth.
The Clearly Filtered pitcher at $100 is the right choice for renters, apartment dwellers, or anyone who can't modify their plumbing. Its 365+ contaminant removal with PFAS certification is remarkable for a no-install solution. Just budget for the $55 replacement filters every 2-3 months.
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