# Waterdrop Water Filters Review

# Waterdrop Water Filters Review: Gallons or Standards, Rarely Both

**strong** Twenty two models sit in it, from a 7 cup pitcher to a tankless system rated 800 gallons a day. *em*

[Waterdrop Filters: Life and Rating](#specs)
[Waterdrop Filters: Line Scorecard](#score)
[Waterdrop Filters: Which Unit Fits](#who)
[Waterdrop Filters: The Trade-offs](#proscons)
[Waterdrop Filters: Running Cost](#cost)
[Waterdrop Filters: Against the Field](#compare)
[Waterdrop Filters: Reader Questions](#faq)
[Waterdrop Filters: Where It Lands](#verdict)

**strong** This article contains affiliate links. **strong** at *em*. **strong** retail prices move daily, so we quote ranges and send you to the live figure on the listing. **strong** *em* Every number on this page traces to manufacturer documentation or a certification record, held against the claims on the box. No free products, no paid placements, no manufacturer relationships. Scoring rules are public on our [methodology page](/methodology).

[](https://www.amazon.com/dp/B0987FCQQW?tag=waterfilternerd-20&linkCode=ogi&th=1&psc=1)

## Waterdrop Water Filters Review: How Long Each One Lasts

**strong** The 8 are the carbon and ultrafiltration end. The figures run 19,000 gallons on the [15UA](/waterdrop-15ua-review), 8,000 on the [10UA](/waterdrop-10ua-review), the [10UB](/waterdrop-10ub-review) and the inline cartridge, 320 on the [FC-01](/waterdrop-fc-01-review) faucet part, and 200 on the [PT-07B](/waterdrop-pt-07b-review) and 2 sibling pitcher and dispenser cartridges. *em*

**strong** Fifteen models name a certification and 11 print a listing number. Four settle for the bare word and 7 leave the slot empty, and every model naming the health standard for osmosis, 53 or 58, is an osmosis part. *em*

- The capacity: 19,000 gallons from the 15UA, 8,000 on 3 under sink or inline models, 320 on the FC-01, and 200 on 3 pitcher and dispenser parts.

- The standard: 11 models print a number, 4 print the word alone, and 7 don't print one at all.

- The shelves: 6 under sink systems, 4 osmosis units, 4 pitcher and dispenser models, 3 reorder parts, 2 faucet mounts, 2 inline or fridge cartridges and 1 straw.

- The gap: not one osmosis unit carries a capacity.

**strong** The G3P800's artwork names 4 standards, 42, 53, 58 and 401, while its record files 3 of them. Its field calls the unit 8 stage and its own copy says 10, and the D6's field says 5 against a copy that says 6. *em*

The short version

**strong** The receipt says what came out, and the license says who checked the work. Four models here hand you both, 4 hand you a capacity with no number, 8 hand you a number with no capacity, and 6 hand you neither. *em*

The Capacity the Line Prints
Bar chart of the rated capacity behind each of the 8 models that states one, in thousands of gallons, with the 15UA at 19,000 against 8,000 on 3 under sink or inline models and 200 on a pitcher part.
The Capacity the Line Prints
Thousands of gallons of rated life, on the 8 models that state one

- 0 5 10 15 20 15UA direct connect 10UB direct connect 10UA direct connect INL inline unit FC-01 faucet part PT-07B pitcher PT-05B-L pitcher WFD-40L dispenser 19,000 gal 8,000 gallons 8,000 gal 8,000 gallon rating 320 gal 200 gal 200 gallons each 200 gallon part Read off the listing life field, longest at the top. The 8 models carrying a capacity, from 19,000 gallons at the top down to 200 on each pitcher and dispenser part. Want the 15UA direct connect? ## Waterdrop Water Filters Review: 5 of 7 Across the Line A brand page scores the line rather than one unit, so this card belongs to the name on 22 boxes. The same 7 questions get asked of every model and answered once for the maker. Five land. Two don't, and both of them are about what the line will print. The standards on file, the cheap way in, the long rated cartridge, the priced reorder and the shelf coverage each take a point. The zeros land on the capacity the osmosis models omit and the number that 4 of the budget models don't print. Five questions come back answered. CriterionPointsEvidence Standards on file1 pointFifteen models name a certification and 11 print a number a buyer can look up, from NSF 42 on its own up to the 4 standard set on the G3P600. A way in at the cheap end1 pointEleven of the 22 sit in the budget tier, and the cheapest model here is a 7 cup jug in a band under $15. A long rated cartridge1 pointEight models state a capacity and the 15UA leads them at 19,000 gallons, with a 2 year interval printed beside it. A priced reorder1 pointThree models quote a reorder band in the index, so the running cost on the under sink shelf can be worked out before you buy. A unit for the job1 pointSix shelves, from the little pitcher to a unit rated at 800 gallons a day, so the line covers a rented flat and a full kitchen alike. A gallon figure on the osmosis models0 pointsNot one osmosis unit states a capacity, so the top half of the line has no rated life to divide by. A number beside the word certified0 pointsEleven of the 22 print nothing a buyer can verify, and 4 of those name the word alone, with no listing number behind them. Both zeros live on paper rather than in water. The 6 osmosis models state no capacity between them, so the dearest half of the line carries no gallon figure a buyer can price. Eleven models print no listing number, and 4 of those rest on the word certified with nothing behind it. The water is fine and the filing is uneven. The dearest model isn't the best documented one. The G3P600 files 4 standards, the deepest set in the line, while the D6 one tier below files none. The unit at the top of the line prints 3. Money buys flow here before it buys paper. Put the flagship tankless pair beside it ## Waterdrop Water Filters: Which Unit Fits This line covers 6 jobs and the band follows the shelf rather than the water. A rented flat wants the 15UA under the sink, with no plumber and no hole drilled in the counter. A household that wants the health standards wants a tankless unit with a drain line and an outlet. You're picking an installation, not a filter. The osmosis half is the half that won't run without an outlet. Both tankless units and the countertop model need power, while the countertop one skips plumbing entirely and pours from a glass jug. The D6 runs the same 600 gallon a day flow as the G3P600 in a cheaper band. Same plumbing, less paper. The under sink roundup runs the 6 direct connect models against the rest of that shelf, and it's the nearest neighbor this line has. The countertop shelf is where the C2SL sits beside its rivals, the faucet mount class covers the 2 screw on units, and the pitcher and dispenser shelf carries the 4 gravity models. #### This Is Not Your Line If You need a capacity before you buy: none of the osmosis units prints one, so there's no rated life on that half, only a clock.

- You want a listing number on the cheapest model: 4 of the budget parts name the word alone and print no number, so you can't check them.

- You want a drain free tank: every tankless unit needs an outlet and a drain line under the cabinet.

- You want one purchase for the whole house: this line treats a single tap, and the whole house class is a different build entirely.

Put another way

**strong** The pitcher filter and the tankless unit share a logo and almost nothing else: different fittings, different paperwork, different money. *em*

[Renting? The countertop unit](https://www.amazon.com/dp/B0GX9JG1R2?tag=waterfilternerd-20&linkCode=ogi&th=1&psc=1)

## Waterdrop Water Filters: The Trade-offs to Know

**strong** One maker covers a fridge cartridge, a screw on faucet part, a small pitcher, 2 tankless systems and a straw, and 15 of the 22 models name a standard somewhere on the box. Three models price a reorder part, which most lines here don't manage. *em*

**strong** Seven models name no certification and 4 more settle for the bare word, so 11 of the 22 hand you nothing to look up. The stage count disagrees with its own copy on 2 of the 4 osmosis units. *em*

#### What You Get

- A capacity you can read off the box on the 8 carbon and ultrafiltration parts.

- A listing number on 11 models, including a 4 standard set on the G3P600.

- A priced reorder on 3 models, so the running cost can be worked out.

#### What It Costs You

- No capacity anywhere on the osmosis shelf.

- The bare word on 4 models instead of a number, and nothing at all on 7.

- A stage count that doesn't hold still between the field and the copy on 2 units.

The [replacement cartridge shelf](/best-replacement-cartridges) holds 3 of these parts, and the [inline shelf](/best-inline-filters) carries the 8,000 gallon cartridge beside its rivals. The [long life roundup](/best-long-life-filters) sorts the same cartridges by the years each one buys.

[Fit the 10UA under sink part](https://www.amazon.com/dp/B0H5J927ZX?tag=waterfilternerd-20&linkCode=ogi&th=1&psc=1)

## What Waterdrop Water Filters Cost to Run

**strong** The 15UA is rated 19,000 gallons against a band under $50, which works out to under a third of a cent a gallon. *em*

**strong** The 4 osmosis units carry bands above $100 and no gallon figure between them, so there's no rate to work out at the top of the line. The pitcher cartridges rate 200 gallons each, which lands their rate in single digit cents. *em*

- The way in: the PT-05B-L pitcher is the cheapest model here, in a band under $15.

- The workhorse: the 15UA sits under $50 for a 19,000 gallon rating, and it's the lowest rate in the line.

- The tankless pair: both sit above $100, and the D6 comes in under the G3P600.

- The reorder: 2 osmosis cartridges and the 10UB-B part are the 3 models that price one.

These cartridges retire on a clock rather than on a gallon count: the 2 osmosis parts run 6 months and a year, the 3 filters in the alkaline unit run 12 months together, and the straw gets backwashed instead of replaced. *em*

[Feeding seven cups at a time? The 7 cup pitcher](https://www.amazon.com/dp/B0CRDSZ9JG?tag=waterfilternerd-20&linkCode=ogi&th=1&psc=1)

The cheapest model in the line: 7 cups, a 200 gallon cartridge and the smallest band here.

## Waterdrop Water Filters Review: The Line Against the Field

**strong** The last column counts what each shelf tells you before you pay. Ten rows, 22 models. *em*

ModelFormatRating printedStandard filedBandWhat it adds

**strong**Tankless, 800 GPDno capacity figure42, 53 and 58a premium band**strong**
G3P600 (B07P1XFYJP)Tankless, 600 GPDnone printed42, 53, 58 and 372a premium bandThe deepest paper in the line and a 2 to 1 drain ratio.
D6 (B0BKZSS3XD)Tankless, 600 GPDnone printednothing on filea mid bandThe same flow as the G3P600 for less money and no certification.
C2SL (B0GX9JG1R2)Countertop, glass jugnone printedno certification fileda mid bandNo plumbing, no counter hole and a 3 to 1 drain ratio.
15UA (B083NR5DVY)Under sink, direct connect19,000 gal42 on its owna budget bandThe cheapest water here and the longest rating.
10UA (B0H5J927ZX) and 10UB (B089CKQGL1)Under sink, direct connect8,000 gal each42 eachbudget and midOne feeds your tap and one adds a second faucet.
TSU (B0BN18B2T4), TSA-UF (B0D1R9RS3S) and TSB-ALK (B0D1R92FPJ)Under sink, 3 to 9 stagenone printed42 on the alkaline unita mid band eachUltrafiltration and a mineral stage, with no capacity stated.
FC-01 (B01GABXWCK) and FC-06 (B07G2FXTZD)Faucet mount320 gal on the FC-01the word certifieda budget and a mid bandA screw on cartridge with no plumbing and no counter hole.
PT-07B (B07C3P2RZP), PT-05B-L (B0CRDSZ9JG), WFD-40L (B09Q8HDVRZ) and WFD-22L (B0FWRSHZF6)Pitcher and dispenser200 gal on 3 of the 4the word certified on 2the budget endThe cheapest way in, from 7 cups up to 40.
INL (B08BFV9FTP) and WD-F11B (B01CA26M2A)Inline and refrigerator8,000 gal on the inline part42 on the fridge parta budget band eachA cartridge that feeds a fridge or an ice maker, not a tap.
G3-N1CF (B07NZSSBWC), G3-N3CB (B07NXQ3S87) and the 10UB-B bundle (B0GXKK8Z2B)Reorder partsnone printed372, 42 53 372 and 42mid, mid and budgetThe 3 parts this line prices in the index.
Straw (B092863ZHD)Hollow fiber strawnone printedno standard anywherea budget bandThe only model here built for water that never came from a tap.

**strong** The [APEC line](/apec-review) stays inside the osmosis shelf and the [iSpring line](/ispring-review) adds whole house systems, while this badge covers 6 shelves on its own. *em*

The Osmosis Shelf, Rated in Gallons
Figure showing the printed flow on each reverse osmosis unit, 800 GPD on the G3P800 against 600 on the G3P600 and the D6, with the countertop C2SL printing no figure at all.
The Osmosis Shelf, Rated in Gallons
Printed flow on 3 of the 4 reverse osmosis units

- 0 200 400 600 800 G3P800 tankless G3P600 tankless D6 tankless C2SL countertop 800 GPD 600 GPD 600 GPD nothing printed The countertop unit prints no flow figure, so it's left with an empty bar. The fastest flow in the line belongs to the flagship, and the C2SL prints none at all. The osmosis shelf is where the flow figures live, and one unit sits outside them. The top system prints its flow, both 600 GPD systems print theirs, and the countertop model prints none. A blank is not a figure. Think of it this way Eight hundred gallons a day is 33 gallons an hour, which is a bathtub every 90 minutes. The pair at 600 runs a bathtub every 2 hours. The C2SL pours 40 ounces into a glass, so it isn't a tap replacement. One badge, 3 different jobs. Compare the 800 gallon a day system ## Waterdrop Water Filters Questions Do Waterdrop reverse osmosis systems waste water Every osmosis model here prints a drain ratio in its copy: 2 to 1 on the G3P600 and the D6, and 3 to 1 on the flagship and on the countertop model. Two cups of pure water for one cup of waste is the common figure on this shelf. Do Waterdrop water filters remove PFAS The osmosis models claim PFAS in their copy and 3 of them name the health standards, 53 or 58. The carbon end claims PFOA and PFOS in its box copy alone, and no pitcher or dispenser model states a health standard. The claim is on every shelf and the paper isn't. Are Waterdrop water filters NSF certified Eleven models print a listing number, 4 use the bare word and no number, and 7 leave the slot empty. Half this line hands you a number and half doesn't. How long do Waterdrop water filters last The 8 models stating a capacity run from 200 gallons on a pitcher part to 19,000 on the 15UA, and the osmosis shelf states none, so its life is a clock rather than a gallon count. Long where it's written, silent where it isn't. What does a Waterdrop filter cost to run The 15UA returns the lowest rate here, under half a cent a gallon. A pitcher cartridge lands in single digit cents, and the tankless systems carry no gallon rating to divide by. Cheap at the glass, unpriced at the top. ## Waterdrop Water Filters Review: Where the Line Lands The pick of the line is the 15UA under sink system, 1 of only 4 models here carrying both a capacity and a listing number. It asks a band under $50, prints 19,000 gallons and files NSF 42, which puts a gallon under a third of a cent. The lowest rate in the line is also a model you can look up. The tankless pair is the pick for a household that wants the health standards, and the G3P600 files the deepest set here at 4. The 7 cup PT-05B-L is the cheap way in, at the bottom of the line. Three models, 3 jobs, 2 currencies. Twenty two models, 6 shelves, a capacity on 8 and a number on 11. Check the 15UA under sink band ### Check the Number, Not the Badge Half this line is a cartridge whose capacity you can look up. The other half is a claim you take on trust, and the model carrying both costs the least to run. Read the gallon figure first and the listing number second. Eight models print a floor, 11 print a number, and 4 manage both. Mounting the flagship? The tankless unit ## Waterdrop Water Filters Terms and Standards Tankless reverse osmosis An osmosis unit with no storage tank under the cabinet. It makes water on demand, so it needs an outlet and a drain line, and it prints its flow in gallons a day. Stage count How many separate media a system passes water through. The count sits in the listing field, and 2 of these 4 units print a different count in their own copy. Direct connect An under sink filter that feeds the tap you already have rather than adding a second one. The 15UA, the 10UB and the 10UA are all built this way. Ultrafiltration A membrane with pores near 0.01 micron, coarser than an osmosis membrane and finer than carbon, used in the TSU and the TSA-UF here. Pure to drain ratio The cups of filtered water a system makes per cup of wastewater. The D6 and the G3P600 print 2 to 1, and the top unit prints 3 to 1. Listing number The document a certifier issues after its testing. Eleven models here print one, 4 name the word and no number, and 7 don't carry one. ## Keep Reading: More Waterdrop Water Filters The Under Sink Water Filters Scorecard: the shelf holding 6 of these models.

- The Replacement Cartridge Roundup: where the 3 priced reorder parts also sit.

- The Countertop Water Filters Class: the shelf the countertop unit shares.

- The Water Filter Index: the pillar these pages were scored against.