Water Filters · Head-to-head
AquaTru Carafe (AT100) vs Waterdrop WD-C1H (CoreRO)
Best Budget (PFAS Not Certified)
Waterdrop WD-C1H (CoreRO)
6.1/10
$249.00 at Amazon
Check price at Amazon
The short answer
AquaTru Carafe (AT100) comes out ahead overall with 8.3/10 against 6.1/10 for the Waterdrop WD-C1H (CoreRO). AquaTru Carafe (AT100) is stronger on pfas reduction evidence, other contaminant coverage, installation & cabinet fit, health, materials & sustainability and reliability & support. Waterdrop WD-C1H (CoreRO) is stronger on flow & daily convenience. At current verified prices, the Waterdrop WD-C1H (CoreRO) costs about $88.50 less.
- Choose the AquaTru Carafe (AT100) if: Most households that want certified PFAS reduction, purified water stored only in glass, and the lowest price among certified units, with no plumbing.
- Choose the Waterdrop WD-C1H (CoreRO) if: Budget shoppers who want RO plus instant hot water and a glass bottle, and accept PFAS claims backed only by maker-commissioned testing.
Scores by criterion
| Criterion | AquaTru Carafe (AT100) | Waterdrop WD-C1H (CoreRO) |
|---|---|---|
| PFAS reduction evidence | 9.5Its data sheet names the exact models (AT100–AT140) under IAPMO's NSF/ANSI 53 PFOA/PFOS certification, with about 99% average reduction. | 4.5Maker-cited SGS PFOA/PFOS tests only. |
| Other contaminant coverage | 8.8Certified to 42/53/58/401, plus an independent Tap Score panel showing 100% removal of 8 of 10 detected contaminants. | 4.5No performance certification or independent full panel; the NSF 58 claim appears only on a Walmart listing. |
| Value | 8.2Cheapest certified unit at $337.50; its 600-gal filters cost about $0.29 per gallon. | 8.0$249 plus $59 a year is the lowest total cost of the picks. |
| Installation & cabinet fit | 8.5Compact and plug-in; the carafe fits in a fridge door. | 8.0Compact, plug-in, no install. |
| Flow & daily convenience | 5.58 cups take about 16.5 minutes, so expect 3–4 refill/empty cycles a day. | 7.0Hot water in about 3 seconds, but a 0.26-gal tank and BOS's lowest usability score of its top seven. |
| Health, materials & sustainability | 8.0Stored water touches only glass; Tritan BPA/BPS-free housing; NSF 372. | 6.5Glass bottle and the best measured wastewater, but the heater adds energy use and only NSF 372 is verified. |
| Reliability & support | 6.0BOS Water reports owner complaints about leaks and support. | 5.5Single-source evidence; limited long-term data. |
Specifications
| Spec | AquaTru Carafe (AT100) | Waterdrop WD-C1H (CoreRO) |
|---|---|---|
| Filter type | Reverse osmosis (pre/carbon, RO membrane, VOC carbon) | Reverse osmosis (PP cotton + carbon fiber + RO membrane in a single C1RF cartridge) |
| PFAS certification (as stated by maker) | IAPMO R&T certified to NSF/ANSI 53 for PFOA/PFOS (models AT100–AT140); also NSF/ANSI 42, 58, 372, 401 | SGS-tested PFOA/PFOS (maker claim); NSF/ANSI 372 (and NSF/ANSI 58 per Walmart listing) |
| Third-party certified for PFAS | Yes | No |
| Filtration stages | 4 | 6 |
| Filter capacity (primary cartridge) | 600 gal | 1,000 gal |
| Rated filter life | 24 months | 12 months |
| Rated flow rate | 0.03 gpm | — |
| Est. annual filter cost | 111 USD | 59 USD |
| Pure-to-drain ratio (RO) | 4:1 claimed; BOS Water measured ~1.8:1 | 3:1 |
| Needs electrical outlet | Yes | Yes |
| Uses dedicated faucet (drilling may be needed) | No | No |
| Water capacity | 8 cups | 5 cups |
| Pitcher body material | Glass carafe; Tritan (BPA/BPS-free) housing | Glass bottle (detachable) |
| Dispenses hot water | No | Yes |
| Remineralization stage included | No | No |
| UV sterilization | No | No |
AquaTru Carafe (AT100)
Pros
- Certified to NSF/ANSI 42, 53, 58, 372 and 401, including PFOA/PFOS
- Purified water touches only glass
- WaterFilterGuru's top-scoring countertop RO
- Lowest price among certified units
- Optional mineral filter adds minerals back
Cons
- Small capacity means several refill cycles a day
- Filters rated for 600 gallons, so cost per gallon is higher than the Classic
- Owners report some failures, leaks and weak support
The best-documented countertop RO we found. It has certification that names its models, strong independent test results and a glass carafe. Daily convenience is its weak spot.
Full AquaTru Carafe (AT100) review →Waterdrop WD-C1H (CoreRO)
Pros
- Lowest price of the five
- Instant hot water in five settings
- Low measured wastewater
- Cheap yearly filter cost
- Detachable glass bottle
Cons
- No certified PFAS or contaminant performance
- Lowest usability score of BOS Water's top seven
- Small internal tank
A sensible budget buy for hot water and general RO, as long as you accept that PFAS claims are not independently certified.
Full Waterdrop WD-C1H (CoreRO) review →Both products are part of our guide The Best Countertop Reverse Osmosis (No Install) of 2026, where you can see every pick, how we score and current prices from each retailer.