Waterdrop WD-G3-N1CF
- Reverse Osmosis
- Point of use
- City water
- Replacement element
- Listed
$29.99as of 2026-09-03
Primary sourceVerified 2026-09-03Brand officialRetailer listing
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Our verdict on the Waterdrop WD-G3-N1CF
The WD-G3-N1CF is the 6-month, 550-gallon pre-sediment and carbon-block cartridge for Waterdrop's G3, G3P600 and G3P800 reverse-osmosis systems, and cost $29.99 at both Waterdrop and Amazon on 2026-09-03. IAPMO R&T lists it for lead-free material content and for material safety and structural integrity inside those systems; the G3 line's chlorine, taste-and-odor and PFOA/PFOS certifications name the separate WD-G3-CB cartridge instead.[1][2][3][4][5][6][7][8]
Best for
- Owners of a Waterdrop G3 (WD-G3-W), G3P600 or G3P800 tankless RO system — the only hosts Waterdrop lists this cartridge for
- Households on a municipal supply that sits inside Waterdrop's stated feed limits: turbidity under 1.0 NTU, hardness under 7 grains per gallon, TDS under 750 ppm and pH between 6.5 and 8.5
- Owners who replace the CF stage on its published schedule of 6 months or 550 gallons, whichever comes first, rather than running it past the red indicator — Waterdrop says an over-used filter degrades filtration and lets contaminants pass back into the water
Not for
- Anyone expecting this cartridge on its own to reduce chlorine, taste and odor or PFOA/PFOS: on the G3 systems' IAPMO R&T files those claims name the WD-G3-CB cartridge, not this one
- Well-water households that have not put a pre-filtration system ahead of the RO unit, which Waterdrop's manual warns will clog this filter and shorten its life
- Owners of a Waterdrop system outside the G3 series, since the brand lists compatibility only with G3P800, G3P600 and G3P400 (WD-G3-W)
Secondary sourceVerified 2026-09-03Manufacturer datasheetIAPMO listingBrand officialRetailer listing
Which models the Waterdrop WD-G3-N1CF fits
The Waterdrop WD-G3-N1CF fits the 3 models listed below, verified 2026-09-03.[1][2][3][4]
| Model | Notes |
|---|---|
| WD-G3P600 | G3P600 600 GPD tankless undersink RO system |
| WD-G3P800-W | G3P800 800 GPD tankless undersink RO system |
| WD-G3-W | G3 / G3P400 400 GPD tankless undersink RO system; no record of its own in this database |
Primary sourceVerified 2026-09-03Manufacturer datasheetIAPMO listingBrand officialRetailer listing
Certification check: Waterdrop WD-G3-N1CF
Listed by IAPMO R&T under NSF/ANSI 372 and NSF/ANSI 58, checked in the certifier directories as of 2026-09-03.
- IAPMO R&T
- NSF/ANSI 372NSF/ANSI 58
IAPMO R&T and WQA certify products against the same NSF/ANSI standards as NSF, so a listing from either one is an equivalent third-party certification, not a lesser one.
| Directory | Result | Listing |
|---|---|---|
| NSF | No listing found (checked 2026-09-03) | View listing |
| IAPMO R&T | Listing found (checked 2026-09-03) | View listing |
| WQA | No listing found (checked 2026-09-03) | View listing |
Claimed vs. certified: Waterdrop WD-G3-N1CF
| Contaminant | Status | Third-party listing | What the brand says |
|---|---|---|---|
| Residual chlorine odors and organic materials | Marketed only | No entry |
|
| Sand, rust, particulates and suspended substances | Marketed only | No entry |
|
| Taste and odor | Marketed only | No entry |
|
| Lead content of wetted materials (a material requirement, not a lead-reduction claim) | Certified only |
| No entry |
| Material safety and structural integrity (no contaminant-reduction claim) | Certified only |
| No entry |
How long the Waterdrop WD-G3-N1CF lasts, and what it costs a year
The Waterdrop WD-G3-N1CF is rated for 550 gallons or 6 months, verified 2026-09-03. Replacing it on that schedule costs $59.98 a year, verified 2026-09-03.
Rated capacity
Primary sourceVerified 2026-09-03Manufacturer datasheetBrand official
Cost per year
| Element | Replace | Cost per year |
|---|---|---|
| WD-G3-N1CF | every 6 months, or every 550 gallons | $59.98 |
| Total per year | $59.98 | |
Primary sourceVerified 2026-09-03Manufacturer datasheetBrand official
What the Waterdrop WD-G3-N1CF does not do
The chlorine, taste and odor reduction certified on the G3 systems is not this cartridge's. IAPMO R&T file WC-14301 (NSF/ANSI 42-2021) lists WD-G3-W, WD-G3P800 and WD-G3P600 with WD-G3-CB as the replacement component for Chlorine, Taste and Odor at 0.50 gpm and 1,100 gallons; the string WD-G3-CF does not appear on that certificate. The Waterdrop WD-G3-N1CF's recorded operating limits are Feed water turbidity up to 1 NTU, Feed water hardness up to 7 grains per gallon, Feed water total dissolved solids up to 750 ppm, Feed water pH at least 6.5 pH and up to 8.5 pH, Feed water pressure at the G3-series host at least 14.5 psi and up to 87 psi, Feed water temperature at the G3-series host at least 41 °F and up to 100 °F, verified 2026-09-03.
The chlorine, taste and odor reduction certified on the G3 systems is not this cartridge's. IAPMO R&T file WC-14301 (NSF/ANSI 42-2021) lists WD-G3-W, WD-G3P800 and WD-G3P600 with WD-G3-CB as the replacement component for Chlorine, Taste and Odor at 0.50 gpm and 1,100 gallons; the string WD-G3-CF does not appear on that certificate.[1]
Primary sourceVerified 2026-09-03IAPMO listing
The PFOA/PFOS reduction certified on the G3 systems is not this cartridge's either. IAPMO R&T file WC-14805 (NSF/ANSI 53-2022) lists WD-G3P800, WD-G3P600 and WD-G3-W with WD-G3-CB as the replacement component for PFOA/PFOS at 0.5 gpm and 1,100 gallons; the string WD-G3-CF does not appear on that certificate.[1]
Primary sourceVerified 2026-09-03IAPMO listing
It performs none of the dissolved-contaminant reduction the G3 systems are listed for. On IAPMO R&T file WC-13976 the TDS, fluoride, cadmium, barium, radium 226/228 and lead claims belong to the WD-G3-W, WD-G3P600 and WD-G3P800 systems with WD-G3-RO, WD-G3P600-RO and WD-G3P800-RO as the replacement component, while the same certificate's footnote confines WD-G3-CF to material safety and structural integrity.[1]
Primary sourceVerified 2026-09-03IAPMO listing
It is not a standalone water filter. The G3 manual's treatment train runs the CF cartridge as one of three cartridges inside the system housing, ahead of the RO membrane and alongside the CB carbon filter, and it has no fittings of its own — it twists into a G3 housing port.[1]
Primary sourceVerified 2026-09-03Manufacturer datasheet
It does not fit Waterdrop systems outside the G3 series. Waterdrop lists compatibility only with the G3P800, G3P600 and G3P400 (WD-G3-W) undersink RO systems, and the OEM manual that ships this cartridge covers only WD-G3-W, WD-G3-B, WD-G3-G and WD-G3P600.[1][2]
Primary sourceVerified 2026-09-03Brand officialManufacturer datasheet
Running it past its rated life does not simply reduce performance gradually — Waterdrop states that over-used filters degrade filtration and let contaminants pass back into the water, and that if the filter expires the filtration efficiency will decrease significantly.[1][2]
Primary sourceVerified 2026-09-03Brand officialManufacturer datasheet
Operating limits
| Parameter | Limit | What it means |
|---|---|---|
| Feed water turbidity | up to 1 NTU[1][2] | Published as a condition on the water the G3-series host and its cartridges receive. It appears both in the OEM manual's Conditions of Validity of this Limited Product Warranty and in Waterdrop's live service-policy page. Primary sourceVerified 2026-09-03Manufacturer datasheetBrand official |
| Feed water hardness | up to 7 grains per gallon[1][2] | Condition on the feed water the G3-series host receives, from the OEM manual's warranty validity conditions and Waterdrop's service-policy page. Primary sourceVerified 2026-09-03Manufacturer datasheetBrand official |
| Feed water total dissolved solids | up to 750 ppm[1][2] | Condition on the feed water the G3-series host receives, from the OEM manual's warranty validity conditions and Waterdrop's service-policy page. Primary sourceVerified 2026-09-03Manufacturer datasheetBrand official |
| Feed water pH | at least 6.5 pH and up to 8.5 pH[1][2] | Condition on the feed water the G3-series host receives, from the OEM manual's warranty validity conditions and Waterdrop's service-policy page. Primary sourceVerified 2026-09-03Manufacturer datasheetBrand official |
| Feed water pressure at the G3-series host | at least 14.5 psi and up to 87 psi[1][2] | A host-scoped figure, recorded here because this cartridge only ever operates inside a G3-series housing. The manual's own troubleshooting names pressure outside this band as a cause of no output and of low flow at the RO faucet. Primary sourceVerified 2026-09-03Manufacturer datasheetBrand official |
| Feed water temperature at the G3-series host | at least 41 °F and up to 100 °F[1][2] | A host-scoped figure, recorded here because this cartridge only ever operates inside a G3-series housing. The manual's troubleshooting names low water temperature as a cause of low flow at the RO faucet. Primary sourceVerified 2026-09-03Manufacturer datasheetBrand official |
Do not buy it for these situations
Well waterOn well water the supply must pass a pre-filtration system before the G3 unit. The OEM manual's specification table gives a feed-water requirement of municipal tap water, and its System Maintenance and Troubleshooting sections both warn that without pre-filtration large particles in well water will easily clog the filter and shorten filter life. Waterdrop's service policy separately excludes damage from non-municipal water sources such as well and river water from warranty cover.[1][2]
Primary sourceVerified 2026-09-03Manufacturer datasheetBrand official
Water pressureThis cartridge only works inside a powered G3-series host, and that host is rated for feed pressure between 14.5 and 87 psi. On a supply below 14.5 psi the manual's troubleshooting lists low water pressure as a cause of no output water from the RO faucet, so a new cartridge will not fix a low-pressure symptom.[1]
Primary sourceVerified 2026-09-03Manufacturer datasheet
How the Waterdrop WD-G3-N1CF works
The Waterdrop WD-G3-N1CF treats water in two stages: Sediment filtration, then Activated carbon, verified 2026-09-03.[1][2]
| Stage | Method | Media | Micron rating |
|---|---|---|---|
| 1 | Sediment filtration | pre-sediment layer | Not recorded |
| 2 | Activated carbon | coconut shell activated carbon block | Not recorded |
Primary sourceVerified 2026-09-03Manufacturer datasheetBrand official
Fit and sizing: Waterdrop WD-G3-N1CF
The Waterdrop WD-G3-N1CF is a reverse osmosis unit installed at the point of use, for city water.
What the Waterdrop WD-G3-N1CF really costs
The Waterdrop WD-G3-N1CF costs $29.99 as of 2026-09-03. Over ten years, including installation and replacement elements, the recorded total is $599.80.
Replacement schedule
| Element | Replace | Cost per year |
|---|---|---|
| WD-G3-N1CF | every 6 months, or every 550 gallons | $59.98 |
Primary sourceVerified 2026-09-03Manufacturer datasheetBrand official
Ten-year cost of ownership
| Purchase price (as of 2026-09-03) | $29.99 |
|---|---|
| Replacement elements, 10 × $59.98/year | $599.80 |
| Sum of the lines above (as of 2026-09-03) | $629.79 |
| Recorded ten-year total | $599.80 |
Money-back guarantee: Waterdrop's service policy gives a 30-day risk-free return on any item purchased from its US site, with no restocking fee; the customer pays return shipping except on quality-related returns, and the policy is stated to be valid only for orders within the continental United States. The product page repeats it as "30-Day Worry-Free Returns". (30 days)[1][2]
Primary sourceVerified 2026-09-03Brand official
Installing the Waterdrop WD-G3-N1CF
Installing the Waterdrop WD-G3-N1CF is an easy job. DIY install, verified 2026-09-03.
Tools required
Primary sourceVerified 2026-09-03Brand officialManufacturer datasheet
Manufacturer documentation
- Install manual: https://cdn.shopify.com/s/files/1/0078/6156/7570/files/WD-G3P600_WD_User_Manual.pdf?v=1679587500 (accessed 2026-09-03)
- Install video: https://www.youtube.com/watch?v=RC2RKLaKJdU (accessed 2026-09-03)
Ongoing maintenance
- Replace the CF cartridge when the CF filter-life indicator turns red, or at 6 months or 550 gallons, whichever comes first — every 6 months
- Before removing the old cartridge, turn off the RO faucet and wait 30 seconds to fully release the system's internal pressure
- After fitting the new cartridge, hold down the CF filter-life indicator for about 7 seconds until the system beeps, to reset that filter's counter
- Let the system flush the new CF cartridge automatically for 5 minutes before drawing water; unlike the CB and RO cartridges this does not require turning the RO faucet on
Primary sourceVerified 2026-09-03Manufacturer datasheetBrand official
Track record: Waterdrop WD-G3-N1CF
Amazon shows 4.8 out of 5 from 3,005 reviews as of 2026-09-03; Waterdrop shows 4.8 out of 5 from 312 reviews as of 2026-09-03.
What owners praise
Ease of replacement and fit are the dominant positive themes. Amazon's own summary of the review text says customers find the filter extremely easy to change and install, with clear instructions and a perfect fit for the Waterdrop system, and tags 163 reviews under "Easy to install" and 22 under "Fit".[1]
Secondary sourceVerified 2026-09-03Amazon review
Taste and service life are the second theme. Amazon's summary reports that the filter makes water taste great, improves drinking water quality and lasts longer than expected, with no mess or leaks reported, tagging 34 reviews under "Water taste", 31 under "Water quality" and 11 under "Leak-proof".[1]
Secondary sourceVerified 2026-09-03Amazon review
What owners complain about
Value for money is the one contested theme, and it is the largest single review-attribute tag after installation. Amazon's summary states that opinions on value for money are mixed, with some finding it worth the price while others consider it pricey; 47 reviews are tagged under "Value for money" against a 4.8 overall average from 3,005 ratings on 2026-09-03.[1]
Secondary sourceVerified 2026-09-03Amazon review
The Waterdrop WD-G3-N1CF against its family and its rivals
The Waterdrop WD-G3-N1CF has 3 siblings in its family: WD-G3-N3CB, WD-G3P600-RO, WD-G3P800-RO. Search demand pairs it with AQUA CREST AQ-G3-CF.
The rest of the family
| Model | What differs |
|---|---|
| WD-G3-N3CB | The CB activated-carbon cartridge for the same G3 hosts, also $29.99 on 2026-09-03 but rated up to 12 months or 1,100 gallons instead of 6 months or 550 gallons. |
| WD-G3P600-RO | The reverse-osmosis membrane cartridge for the G3P600 host, rated up to 24 months or 2,200 gallons; it is the stage that produces the system's dissolved-solids reduction. |
| WD-G3P800-RO | The reverse-osmosis membrane cartridge for the G3P800 host, the 800 GPD equivalent of WD-G3P600-RO. |
Cross-shopped against
| Rival | Why this pair |
|---|---|
| AQUA CREST AQ-G3-CF | Directory evidence rather than keyword evidence: AQ-G3-CF sits beside Waterdrop's WD-G3-CF under Product Type Component on IAPMO R&T file WC-13977 (checked 2026-09-03), making it the third-party G3 CF cartridge with a directory entry of its own. |
The Waterdrop WD-G3-N1CF and cartridges sold as compatible
Both live IAPMO R&T entries cover the Waterdrop-branded cartridge specifically. File WC-13977 lists Brand Name Waterdrop, Model Number WD-G3-CF under the heading Product Type Component, certified to Section 1417(d) of the Safe Drinking Water Act, Section 116875 of the California Health & Safety Code and NSF/ANSI/CAN 372-2020. File WC-13976 (NSF/ANSI 58-2024) adds, verbatim, that "Carbon filter WD-G3-CB and PP filter WD-G3-CF certified for Material Safety and Structural Integrity when used in WD-G3-W, WD-G3P600 and WD-G3P800 RO System." Neither entry extends to third-party cartridges sold as compatible with the G3 series, and this record makes no certification claim about them in either direction; only a dated lookup of a particular third-party cartridge's own model number could establish its status. One such cartridge, AQUA CREST's AQ-G3-CF, does appear on WC-13977 under its own brand name.[1][2]
Primary sourceVerified 2026-09-03IAPMO listing
Waterdrop WD-G3-N1CF questions, answered
What is the lifespan of a Waterdrop G3 filter?
The CF cartridge, WD-G3-N1CF, is rated for up to 6 months or 550 gallons, whichever comes first. The other two cartridges in the same G3 system run longer: the CB activated-carbon filter is rated up to 12 months or 1,100 gallons and the RO membrane up to 24 months or 2,200 gallons. Waterdrop notes that filter life varies with source water quality and usage, and the system's indicators trigger on elapsed time or treated volume, whichever arrives first.
Sources: [1]
What does "CF" mean in the context of Waterdrop filters?
CF is Waterdrop's label for the Pre-sediment and Carbon Block Filter — the first cartridge water meets inside a G3-series system. The manual's Product Introduction diagram labels the three cartridge ports C for Activated Carbon (CB), D for Pre-sediment and Carbon Block Filter (CF) and E for Reverse Osmosis Membrane Filter (RO). So a CF cartridge combines a sediment stage and a carbon-block stage in one body; Waterdrop describes the carbon as an activated carbon block made from Sri Lankan coconut shell.
How often should I replace my waterdrop CF filter?
Verified health claim
Every 6 months or 550 gallons, whichever comes first, or sooner if the CF indicator turns red. Waterdrop is explicit about why the deadline matters: its product-page FAQ says over-used filters degrade filtration performance and cause contaminants to leak back into the water, and the manual says that once a filter expires filtration efficiency will decrease significantly. The system warns before that point — the CF light turns yellow at 15 days or 40 gallons remaining, and red at zero.
Is the Waterdrop WD-G3-N1CF NSF certified?
Verified health claim
It carries two IAPMO R&T listings and no NSF or WQA listing, and the scope of those listings is narrower than the marketing suggests. Checked live on 2026-09-03: IAPMO R&T file WC-13977 lists Waterdrop's WD-G3-CF under Product Type Component for NSF/ANSI/CAN 372-2020 lead-content compliance, and file WC-13976 records that "Carbon filter WD-G3-CB and PP filter WD-G3-CF certified for Material Safety and Structural Integrity when used in WD-G3-W, WD-G3P600 and WD-G3P800 RO System." Both are material and construction listings — neither is a contaminant-reduction claim for this cartridge. The same searches found no listing in the NSF or WQA directories on that date. IAPMO R&T is a certifier to the NSF/ANSI standards on the same footing as NSF itself, so an IAPMO listing is not a lesser one.
Does the Waterdrop CF filter remove PFAS?
Verified health claim
No PFAS claim attaches to this cartridge. On IAPMO R&T file WC-14805, the NSF/ANSI 53-2022 PFOA/PFOS reduction certified for the WD-G3P800, WD-G3P600 and WD-G3-W systems names WD-G3-CB — the separate carbon cartridge — as the replacement component, and the model WD-G3-CF appears nowhere on that certificate. A Listed Model search for WD-G3-CF on 2026-09-03 returned exactly one IAPMO file, WC-13977, which is the lead-content listing. Replacing only the CF cartridge therefore does not restore the system's PFOA/PFOS claim; that claim is tied to the CB cartridge's own replacement schedule.
Does replacing the CF filter restore the chlorine and taste reduction my G3 is certified for?
Verified health claim
Not by itself. The G3 systems' NSF/ANSI 42-2021 listing for Chlorine, Taste and Odor is IAPMO R&T file WC-14301, and it names WD-G3-CB as the replacement component for WD-G3-W, WD-G3P800 and WD-G3P600 at 0.50 gpm and 1,100 gallons; WD-G3-CF does not appear on it. Waterdrop's own marketing for the CF cartridge does say its coconut-shell carbon block absorbs residual chlorine odors and improves taste, but that is the brand's claim about itself rather than a certified one, and the certified chlorine reduction sits on the CB cartridge, which runs on a 12-month schedule.
Can I use the WD-G3-N1CF on well water?
Verified health claim
Only behind a pre-filtration system. Waterdrop's specification table gives the G3 series a feed-water requirement of municipal tap water, and the manual states that if you use well water as the source you must ensure the feed water has passed a pre-filtration system, because otherwise large particles in the well water will easily clog the filter and shorten filter life. Waterdrop's service policy goes further and excludes damage from non-municipal sources such as well and river water from warranty cover, so an unfiltered well supply both shortens this cartridge's life and voids the host system's coverage.
What does it mean when the CF light on my Waterdrop G3 turns yellow or red?
Yellow is the pre-warning and red means the cartridge is out. The manual's display-status table sets the CF indicator blue while more than 15 days and more than 40 gallons of rated life remain, yellow at 15 days or fewer or 40 gallons or fewer — at which point the system beeps twice when dispensing — and red at zero, when it keeps beeping while dispensing. The same colours appear on the RO faucet screen. Because the indicators fire on elapsed time or treated volume, whichever comes first, a light can turn yellow well before the six-month mark on heavy usage.
Sources: [1]
Why is the filter light still red after I changed the CF filter?
Because the counter has not been reset — fitting a new cartridge does not clear it. Waterdrop's instruction is to press and hold the CF filter-life indicator for about 7 seconds until the system beeps and the blue light stays on; the manual describes the same 7-second hold, using the CB indicator as its worked example and noting that the CF and RO indicators reset the same way. After the reset the system flushes the new CF cartridge automatically for 5 minutes, without the RO faucet being turned on.
Where can I buy the WD-G3-N1CF, and what does it cost?
It was $29.99 at both Waterdrop's own store and Amazon on 2026-09-03, and the same $29.99 appeared at Home Depot and Walmart on that day's search results. Waterdrop sells it directly at waterdropfilter.com under SKU WD-G3-N1CF, with an Autoship subscription option at $28.49 every six months; Amazon carries it from the Waterdrop Store under ASIN B07NZSSBWC. At the rated six-month interval, two cartridges a year come to $59.98, which is the figure this page's ten-year cost is built from.
Sources and data report: Waterdrop WD-G3-N1CF
Every figure above is taken from the highest-trust source that carries it and re-derived from that source by a separate check. How we verify product data.
What we could not establish, and why
| Field | Why it is blank |
|---|---|
| certified.certIndexKey | No match in our certification corpus. Searched apps/website/data/certifications/ for WD-G3-CF, WD-G3-N1CF, G3-N1CF and WD-G3-CB and got zero files; the Qingdao Ecopure (719 records) and Waterdrop (19 records) by-brand indexes contain no G3-series model at all, though a control grep for WC-13977 does hit six files. This is a gap in our corpus and says nothing about certification — the two live IAPMO checks in liveCertChecks are what speak to that. |
| fit.bathroomsServed | Neither the exact product page, the OEM manual nor the two IAPMO certificates rate this cartridge, or its host systems, by number of bathrooms. It is a point-of-use drinking-water cartridge, so no source publishes such a figure. |
| fit.householdSize | No source publishes a household-size rating. Waterdrop's product page says only "Perfect for families, this filter handles 550 gallons", which is a capacity statement rather than an occupancy rating, and inferring people from gallons would be a guess. |
| fit.serviceFlowGpm | No cartridge-level flow rate is published. The 0.50 gpm on IAPMO files WC-14301 and WC-14805 is the flow of the whole G3 system tested with WD-G3-CB as the replacement component, not of this cartridge, and attributing it here would misassign a certified figure. |
| fit.roOutputGpd | The 400/600/800 GPD figures belong to the G3, G3P600 and G3P800 host systems and their RO membranes (WD-G3-RO, WD-G3P600-RO, WD-G3P800-RO), which this cartridge is not. One cartridge fits all three hosts, so there is no single figure to carry even if it were attributable. |
| fit.roTankCapacity | The G3 series is tankless — the manual's parts list and the IAPMO product type "Plumbed-in to separate tap without reservoir" both confirm there is no storage tank — so no source publishes a tank capacity for the system, let alone for this cartridge. |
| fit.pressureRange | The 14.5-87 psi range is the host system's feed-water rating, published for WD-G3-W / WD-G3-B / WD-G3-G / WD-G3P600 in the manual's specification table. No source rates this cartridge independently, and one cartridge fits three hosts. The figure is recorded in effectivenessBounds instead, where the note keeps its host scope visible. |
| fit.temperatureRange | Same host-scope problem as the pressure range: 41-100 °F is the G3 system's feed-water temperature rating, not a rating for this cartridge. It is recorded in effectivenessBounds with its scope stated. |
| fit.connectionSize | The cartridge has no plumbing connection to size. It twists into a proprietary port in the G3 housing — the manual's Figure 28/29 show the twist-in interface and the centre knob — and neither the manual nor the product page gives a thread or fitting dimension for it. |
| fit.requiresElectricity | Electricity is a property of the host, which runs on a 110-240V AC adapter, not of the cartridge. No source states an electrical requirement or non-requirement for WD-G3-N1CF itself, and answering false would be our inference rather than a published fact. The manual's statement that filters can be changed without cutting off the power is about the replacement procedure, not about a power requirement. |
| fit.requiresDrain | The drain connection belongs to the host system, which discharges RO concentrate through a drain saddle. No source attributes a drain requirement to this cartridge, and the cartridge is not the stage that produces concentrate. |
| cost.msrp | Waterdrop publishes no list price for this cartridge. The product page shows $29.99 as the live one-time purchase price with no struck-through was-price and no MSRP label, and the store's product JSON carries only price 2999 with no compare_at price. Treating the selling price as an MSRP would invent a distinction the brand does not make. |
| cost.wasteRatio | A waste ratio is a property of the RO membrane stage and its host, not of a pre-filter cartridge. The G3 hosts publish their own ratios and they differ between the 400, 600 and 800 GPD models this one cartridge fits, so there is no cartridge-level figure to record. |
| cost.warranty | No warranty term is published for this cartridge. Waterdrop's service policy says most Waterdrop RO systems carry a 1-year limited warranty and that "Warranty coverage, terms, and duration may vary by model. Please refer to the specific product page for complete details" — and the WD-G3-N1CF product page states no term. The same policy's extended-warranty exclusion 9 says "Filters are consumables and not covered by this extended warranty service", so inheriting the host system's 1-year term would be wrong as well as unsourced. The 30-day return that does apply is recorded in cost.moneyBackGuarantee. |
| install.estimatedHours | No total time is published. Waterdrop's "Easy Installation In 3 Seconds" covers only the twist-in step, while the manual's full procedure adds a 30-second pressure release before removal, a 7-second indicator reset after, and a 5-minute automatic flush before water is drawn. No source adds these into a figure, and summing them ourselves would be our arithmetic presented as the manufacturer's. |
| seo.cluster.primary.kd | The approved build-list row carries kd: null for this keyword — Ahrefs returned no difficulty score for it — and this pipeline reads the build list rather than re-querying Ahrefs, so there is no figure to fill in. |
| seo.verification | Reserved for the independent verify loop, which stamps it on pass. This is the initial research pass (cycle 0). |
Every source behind this page
- Brand officialaccessed: 2026-09-03https://www.waterdropfilter.com/products/wd-g3-n1cf
- Waterdrop's own product page for WD-G3-N1CF shows "In Stock—Estimated delivery in 3-7 business days" and an active Add to Cart on 2026-09-03
- The store's product JSON reports available: true for the single WD-G3-N1CF variant
- COMPATIBLE FOR: G3 Series Undersink RO — G3P800, G3P600, G3P400
- Specification table gives Capacity: 550 Gallons
- Specification table gives Filter Lifespan: 6 Months
- Exact SKU WD-G3-N1CF, one-time purchase price $29.99, compatibility with G3P800, G3P600 and G3P400 only
- Product-page FAQ: over-used filters degrade filtration performance and cause contaminants to leak back into the water
- The CF filter employs an activated carbon block made from Sri Lankan coconut shell
- Product-page FAQ: "Over-used filters will degrade the filtration performance, causing contaminants to leak back into the water and adversely affect your health."
- Specification table: Product Dimensions (In) 3.3" x 3.3" x 12.1"
- One-time purchase price $29.99 on 2026-09-03 (an Autoship subscription is offered at $28.49)
- The store's product JSON reports price 2999 cents for the single WD-G3-N1CF variant
- "Easy Installation In 3 Seconds — This replacement water filter is designed to be easily replaced by twist-and-pull without any tools."
- Unit price $29.99 on 2026-09-03, which at the six-month interval is two cartridges a year = $59.98
- The WD-G3-N1CF product page carries the badge "30-Day Worry-Free Returns"
- "Replace in seconds—no mess, no tools, no hassle."
- "This replacement water filter is designed to be easily replaced by twist-and-pull without any tools."
- Product-page FAQ gives the same reset: "Press and hold the CF filter life indicator for 7 seconds, until the system beeps and the blue light stays on."
- "The CF filter employs the activated carbon block made by the superior Sri Lankan coconut shell."
- Product-page FAQ: "You have not reset the filter life indicator. Please reset it: Press and hold the CF filter life indicator for 7 seconds, until the system beeps and the blue light stays on."
- One-time purchase $29.99 and Autoship Subscription $28.49 delivered every 6 months, on 2026-09-03
- Retailer listingaccessed: 2026-09-03https://www.amazon.com/dp/B07NZSSBWC
- Amazon shows the Waterdrop Store listing for WD-G3-N1CF as In Stock on 2026-09-03
- Product details give Compatible Water Purifier Models: Waterdrop WD-G3-W, Waterdrop WD-G3P600, Waterdrop WD-G3P800-W
- ASIN B07NZSSBWC sells Waterdrop model number WD-G3-N1CF at $29.99, in stock on 2026-09-03
- Product details give Item Dimensions D x W x H as 3.3"D x 3.3"W x 12.1"H, matching the brand figure and fixing which axis is the 12.1 in one
- Amazon price $29.99, in stock, on 2026-09-03
- "Customers find the water filter extremely easy to change and install, with clear instructions and perfect fit for the Waterdrop filtration system."
- Review-attribute tags on 2026-09-03: Easy to install (163), Fit (22), Instructions (11)
- "the filter makes water taste great, improves drinking water quality, and lasts longer than expected, with no mess or leaks reported"
- Review-attribute tags on 2026-09-03: Water taste (34), Water quality (31), Durability (26), Leak-proof (11)
- "However, opinions on value for money are mixed, with some finding it worth the price while others consider it pricey."
- Review-attribute tag Value for money (47); overall 4.8 out of 5 from 3,005 ratings on 2026-09-03
- Waterdrop Store bullet: "[Premium material] Applies the superior natural coconut shell-activated carbon block with a smaller pore size, which largely absorbs residual chlorine odors and organic materials, improving water taste."
- ASIN B07NZSSBWC, Waterdrop Store, model number WD-G3-N1CF, $29.99, In Stock on 2026-09-03
- Manufacturer datasheetaccessed: 2026-09-03https://cdn.shopify.com/s/files/1/0078/6156/7570/files/WD-G3P600_WD_User_Manual.pdf?v=1679587500
- Parts list (page 2) shows WD-G3-CF as one of the three cartridges shipped with the WD-G3-W / WD-G3-B / WD-G3-G / WD-G3P600 system
- Specifications table (page 1) covers models WD-G3-W / WD-G3-B / WD-G3-G / WD-G3P600
- Section 2, Filter Life Reminder: "Pre-sediment and Carbon Block Filter (CF) — Filter Life: Up to 6 months or 550 gallons"
- Section 2 rates the CF cartridge at up to 6 months, and notes the indicators trigger on usage time or processing capacity, whichever comes first
- Section 2 rates the Pre-sediment and Carbon Block Filter (CF) at up to 6 months or 550 gallons
- Parts list names the three G3 cartridges WD-G3-CB, WD-G3-CF and WD-G3P600-RO
- System Maintenance warns that well water without pre-filtration will easily clog the filter and shorten filter life
- Section 3 replacement procedure is a counterclockwise twist out and clockwise twist in, with no tools and without cutting power or water
- Product Introduction (page 3) labels part D "Pre-sediment and Carbon Block Filter (CF)", placing a sediment stage and a carbon-block stage in this one cartridge
- Parts list and Product Introduction show CF, CB and RO cartridges seated in one system housing
- Section 3 describes replacement as twisting the cartridge into the housing, with no plumbing connection
- Specifications table (page 1) covers models WD-G3-W / WD-G3-B / WD-G3-G / WD-G3P600 only
- Section 3 note: "If the filter expires, please purchase and replace the filter immediately. Otherwise, the filtration efficiency will decrease significantly and affect the performance."
- Limited Product Warranty condition 4: "Turbidity must be less than 1.0 NTU."
- Limited Product Warranty condition 7: "The max hardness must be less than 7 grains per gallon."
- Limited Product Warranty condition 6: "The Total Dissolved Solids (TDS) must be less than 750 ppm."
- Limited Product Warranty condition 3: "The feed water must have a pH between 6.5 and 8.5."
- Specifications table (page 1): "Feed Water Pressure 14.5-87 PSI/0.1-0.6 MPa"
- Troubleshooting, No Output Water from RO Faucet: "Low water pressure. Check and confirm the water pressure is between 14.5 PSI and 87 PSI."
- Specifications table (page 1): "Feed Water Temperature 41-100 °F / 5-38 °C"
- Troubleshooting, Low Water Flow at the RO Faucet: "Low water temperature. Be sure to use the system at a temperature of 41-100 °F."
- Specifications table: "Feed Water Requirement — Municipal Tap Water"
- System Maintenance: "If you are using well water as the source, please ensure that the feed water has been through a pre-filtration system. Otherwise, large particles in the well water will easily clog the filter and shorten the filter life."
- Specifications table: "Feed Water Pressure 14.5-87 PSI"
- Troubleshooting, No Output Water from RO Faucet, cause b: low water pressure outside 14.5-87 PSI
- Section 3: "The filters could be replaced directly without cutting off the power and water supplies, and there will be no water and electric leakage." The procedure is a twist out and a twist in.
- Section 2 rates the CF cartridge at up to 6 months or 550 gallons, whichever comes first
- Section 3: filters are replaced without cutting off power or water; twist out counterclockwise, twist in clockwise, reset and flush
- Section 3 lists no tool for cartridge replacement; the manual's Required Tools list belongs to first-time system installation, not to a filter change
- Waterdrop's OEM user manual for the WD-G3-W / WD-G3-B / WD-G3-G / WD-G3P600 systems, covering the CF cartridge's identity, service life, replacement procedure, indicator reset and post-replacement flush
- Section 3 replacement steps, including the 30-second pressure release
- "Hold the CB filter life indicator for 7 seconds until the system beeps... hold down the CF or RO indicator to reset the corresponding filter."
- "For CF filter: It will be flushed automatically for 5 minutes without turning on the RO faucet"
- Section 2 display-status table: the CF indicator turns red at zero remaining life or capacity
- Section 2, Filter Life Reminder: CF up to 6 months or 550 gallons, CB up to 12 months or 1,100 gallons, RO up to 24 months or 2,200 gallons
- "Filter life may vary depending on source water quality and water usage" and "The indicators will notify you according to the usage time or processing capacity of the filters, whichever comes first."
- Product Introduction (page 3) labels part D "Pre-sediment and Carbon Block Filter (CF)", part C "Activated Carbon (CB)" and part E "Reverse Osmosis Membrane Filter (RO)"
- Section 2 rates CF at up to 6 months or 550 gallons and gives the display-status table: Normal >15 days / >40 gallons blue, Pre-warning ≤15 days / ≤40 gallons yellow, Warning ≤0 red
- System Maintenance and the page 1 note both require pre-filtration ahead of well-water feed, warning of clogging and shortened filter life
- Section 2 display-status table with the blue / yellow / red thresholds and buzzer behaviour, and the faucet-screen equivalent in Section 2 part 2
- "The indicators will notify you according to the usage time or processing capacity of the filters, whichever comes first."
- "Hold the CB filter life indicator for 7 seconds until the system beeps. NOTE: Refer to the above method, hold down the CF or RO indicator to reset the corresponding filter."
- IAPMO listingaccessed: 2026-09-03https://myplc.iapmo.org/certificate#/19833
- IAPMO R&T file WC-13976 footnote names WD-G3-W, WD-G3P600 and WD-G3P800 as the RO systems this cartridge is used in
- IAPMO R&T file WC-13976 (NSF/ANSI 58-2024) footnote scopes PP filter WD-G3-CF to Material Safety and Structural Integrity when used in WD-G3-W, WD-G3P600 and WD-G3P800 RO System
- WC-13976 model table lists the RO membrane as the replacement component behind each system's reduction claims
- Footnote 1 restricts WD-G3-CF to Material Safety and Structural Integrity
- WC-13976 footnote 1, quoted verbatim in this note, scoping WD-G3-CF to Material Safety and Structural Integrity in the three named RO systems
- WC-13976 footnote 1 quoted verbatim in this answer
- IAPMO listingaccessed: 2026-09-03https://myplc.iapmo.org/certificate#/19834
- IAPMO R&T file WC-13977 lists Waterdrop WD-G3-CF under Product Type Component, certified to NSF/ANSI/CAN 372-2020 lead-content requirements
- WC-13977 Product Type Component table lists Waterdrop / WD-G3-CF and, separately, AQUA CREST / AQ-G3-CF
- Certificate header names the standards as Section 1417(d) SDWA, California Health & Safety Code 116875 and NSF/ANSI/CAN 372-2020, current as of September 3, 2026
- WC-13977 lists Waterdrop / WD-G3-CF under Product Type Component, certified to NSF/ANSI/CAN 372-2020 and the SDWA and California lead-content requirements, current as of September 3, 2026
- WC-13977 is the single file returned by an IAPMO Listed Model search for WD-G3-CF on 2026-09-03
- IAPMO listingaccessed: 2026-09-03https://myplc.iapmo.org/certificate#/19838
- IAPMO R&T file WC-14805 (NSF/ANSI 53-2022) gives the G3 systems' PFOA/PFOS reduction claim with WD-G3-CB as the replacement component; WD-G3-CF appears nowhere on the certificate
- WC-14805 model table pairs each G3 system with replacement component WD-G3-CB for PFOA/PFOS
- A full-text scan of the certificate returned zero occurrences of WD-G3-CF
- WC-14805 (NSF/ANSI 53-2022) model table: WD-G3P800, WD-G3P600 and WD-G3-W each with replacement component WD-G3-CB, reduction claim PFOA/PFOS, 0.5 gpm, 1100 gallons
- IAPMO listingaccessed: 2026-09-03https://myplc.iapmo.org/certificate#/19835
- IAPMO R&T file WC-14301 (NSF/ANSI 42-2021) gives the G3 systems' Chlorine, Taste and Odor reduction claim with WD-G3-CB as the replacement component; WD-G3-CF appears nowhere on the certificate
- WC-14301 model table pairs each G3 system with replacement component WD-G3-CB for Chlorine, Taste and Odor
- A full-text scan of the certificate returned zero occurrences of WD-G3-CF
- WC-14301 (NSF/ANSI 42-2021) model table: WD-G3-W, WD-G3P800 and WD-G3P600 each with replacement component WD-G3-CB, reduction claims Chlorine, Taste and Odor, 0.50 gpm, 1,100 gallons
- Brand officialaccessed: 2026-09-03https://www.waterdropfilter.com/pages/service-policy
- Feed-water usage conditions behind the verdict's bestFor limits: turbidity < 1.0 NTU, water hardness < 7 grains per gallon, water TDS < 750 ppm, pH 6.5-8.5, municipal tap water with well water requiring pre-filtration
- Extended-warranty usage conditions list "Turbidity: < 1.0 NTU"
- Extended-warranty usage conditions list "Water hardness: < 7 grains per gallon"
- Extended-warranty usage conditions list "Water TDS: < 750 ppm"
- Extended-warranty usage conditions list "pH value: 6.5-8.5"
- Extended-warranty usage conditions list "Inlet water pressure: 14.5-87 psi"
- Extended-warranty usage conditions list "Inlet water temperature: 41°F-100°F"
- Usage conditions: "Water source: municipal tap water (Well water requires pre-filtration.)"
- Exclusion 11: "Damage from using non-municipal water sources, such as well water and river water."
- "30-day Risk-free Return Policy: You are eligible to return any item(s) within 30 days of receipt... No restocking fee will be charged, but customers are responsible for the return shipping cost. We will cover the return postage expenses in the case of any return requests related to a quality issue. Please note that the 30-day risk-free return policy is only valid for orders within the continental United States."
- "The 30-day risk-free return policy applies to all item(s)", which is what makes it applicable to a consumable cartridge
- Extended-warranty exclusion 11: "Damage from using non-municipal water sources, such as well water and river water."
- Brand officialaccessed: 2026-09-03https://www.youtube.com/watch?v=RC2RKLaKJdU
- "How to Replace Filters for Waterdrop G3 RO Reverse Osmosis System | Filter Replacement Guide", published by the Waterdrop Filter channel, is the brand's own filter-change walkthrough for this cartridge's hosts
- Government agencyaccessed: 2026-09-03https://www.saferproducts.gov/RestWebServices/Recall?format=json&RecallDescription=Waterdrop
- CPSC's saferproducts.gov recall service returned an empty array for RecallDescription=Waterdrop on 2026-09-03; the parallel query ProductName=Waterdrop also returned an empty array
- Government agencyaccessed: 2026-09-03https://www.saferproducts.gov/RestWebServices/Recall?format=json&RecallTitle=water%20filter
- Positive control on the same endpoint: RecallTitle=water filter returned recall 97076, "Sears Water Filter Cartridges Recall by Ecodyne", which proves the filter parameter executes and that the empty Waterdrop result is a real negative rather than an unexecuted search
- NSF listingaccessed: 2026-09-03https://info.nsf.org/Certified/DWTU/listings.asp?TradeName=WD-G3-CF&Standard=&ProductType=&PlantState=&PlantCountry=&PlantRegion=&submit3=Search
- NSF's Drinking Water Treatment Units directory returned "No Matching Products Found" for WD-G3-CF and for WD-G3-N1CF on 2026-09-03, while the same search form returned large live result sets for trade name Waterdrop and for manufacturer Qingdao Ecopure Filter Co., Ltd. — neither of which contains any WD-G3 model
- WQA listingaccessed: 2026-09-03https://find.wqa.org/find-products#/keyword/WD-G3-CF
- WQA's Gold Seal product search returned "No results." for WD-G3-CF, WD-G3-N1CF, Waterdrop and Qingdao Ecopure on 2026-09-03, while control searches for Culligan and Pentair on the same form returned listings
- Retailer listingaccessed: 2026-09-03https://www.google.com/search?q=waterdrop+replacement+filter+wd-g3-n1cf&hl=en&gl=us&num=20
- Live results on 2026-09-03 showed Home Depot at $29.99 in stock and Walmart at $29.99 in stock for the same cartridge, alongside higher third-party and multi-pack prices
Cite this page
TapWaterData Editorial. "Waterdrop WD-G3-N1CF Review: Specs, True Cost & Cert Check." TapWaterData, verified 2026-09-03. https://www.tapwaterdata.com/filters/brand/waterdrop/wd-g3-n1cf
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