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PureSipSpring

SourcesEverything on this site comes from two places: the text of a product listing, and a published standard. Nothing here is a test result of our own, because there are none.

54 listings · 5 standards pages · 9 cartridge codes

A claim is not a certification

A pitcher says it removes PFOA and PFOS. A refrigerator cartridge says it reduces fifty impurities. Two cartridges for the same appliance carry completely different certifications, and the listing that says the most is not always the one certified to the most. This site reads the standard numbers instead of the adjectives, and it starts with the one number a vessel listing never gets wrong.

Hiking and Wide-Mouth Flasks, Hydro Flask Micro Bottle, 6.7 oz at 6.7 ozInsulated Water Bottles, THERMOS FUNTAINER Bottle with Straw, 12 oz at 12 ozInsulated Water Bottles, THERMOS FUNTAINER Bottle with Straw, 12 oz, Bluey at 12 ozTumblers and Travel Cups, Owala Kids Tumbler, 12 oz at 12 ozInsulated Water Bottles, Simple Modern Kids Water Bottle, 14 oz at 14 ozInsulated Water Bottles, Simple Modern Disney Princess Kids Bottle, 14 oz at 14 ozInsulated Water Bottles, THERMOS FUNTAINER Bottle with Spout, 16 oz at 16 ozInsulated Water Bottles, Simple Modern Minecraft Water Bottle, 18 oz at 18 ozTumblers and Travel Cups, YETI Rambler Tumbler, 20 oz at 20 ozTumblers and Travel Cups, RTIC Essential Tumbler, 20 oz at 20 ozTumblers and Travel Cups, HydroJug Everyday Tumbler, 20 oz at 20 ozTumblers and Travel Cups, SUNWILL Travel Coffee Tumbler, 20 oz at 20 ozHiking and Wide-Mouth Flasks, Hydro Flask Standard Flex, 21 oz at 21 ozInsulated Water Bottles, Ello Pop & Fill Water Bottle, 22 / 32 / 40 oz at 22 to 40 ozInsulated Water Bottles, Owala FreeSip Water Bottle, 24 oz at 24 ozInsulated Water Bottles, Owala Princess FreeSip Bottle, 24 oz at 24 ozHiking and Wide-Mouth Flasks, IRON FLASK Narrow Mouth with Straw, 24 oz at 24 ozInsulated Water Bottles, POWCAN Insulated Water Bottle, 26 oz at 26 ozInsulated Water Bottles, Simple Modern Summit Water Bottle, 30 oz at 30 ozInsulated Water Bottles, Owala FreeSip Sway Water Bottle, 30 oz at 30 ozTumblers and Travel Cups, STANLEY Quencher ProTour Flipstraw Tumbler, 30 oz at 30 ozHiking and Wide-Mouth Flasks, IRON FLASK Wide Mouth with 3 Lids, 32 oz at 32 ozHiking and Wide-Mouth Flasks, Hydro Flask Wide Mouth Flex Lid, 32 oz at 32 ozHiking and Wide-Mouth Flasks, IRON FLASK Wide Mouth with Straw, 40 oz at 40 ozTumblers and Travel Cups, HydroJug Traveler Tumbler, 40 oz at 40 ozTumblers and Travel Cups, BruMate Era Tumbler, 40 oz at 40 ozTumblers and Travel Cups, BruMate Era Flip Tumbler, 40 oz at 40 ozTumblers and Travel Cups, Simple Modern Trek Tumbler, 40 oz at 40 ozInsulated Water Bottles, DYSANKY Insulated Water Jug, 64 oz at 64 ozHiking and Wide-Mouth Flasks, STANLEY IceFlow Flip Straw Jug, 64 oz at 64 oz8162432404856646.7 oz64 oz
BottlesFlasksTumblersDashed edge means the listing states a range

30 vessel listings state a volume: 29 with a single figure, and 1 stating more than one size, drawn as a span with a dashed edge. Each capsule links to the category it sits in, and every number here is read from the same data the category pages use.

Read this before any of it

No filter in this catalog makes unsafe water drinkable. Household drinking water filters are designed for water that is already fit to drink. They are not intended for microbiologically unsafe water and they do not replace a boil water advisory from your utility or health department.

If you suspect lead or contamination in your supply, the next step is your utility's Consumer Confidence Report, the EPA, and your local health department. It is not a purchase.

The mark on this site

4253401

Named on the listing: NSF/ANSI 42, 53, 401.A genuine cartridge whose listing writes all three numbers down.

4253401

Named on the listing: NSF/ANSI 42. Not named: 53, 401.An aftermarket cartridge naming one number and no others.

4253401

No standard number is named on the listing. Not named: 42, 53, 401.A listing that names NSF/ANSI without a number, or names nothing.

Three cells, three separate questions

NSF/ANSI 42 covers aesthetic effects: chlorine taste and odor, and particulate reduction. NSF/ANSI 53 covers reduction claims the standard classes as health related, lead among them. NSF/ANSI 401 covers a separate defined list of incidental and emerging compounds. They are three scopes, not three tiers, and a cartridge can hold any combination of them.

"Reduces 50+ impurities" is none of those. It is a count a seller published, with no list attached, no test protocol and no certifier to ask. It can sit on the same listing as three real standard numbers, and on several listings in this catalog it does.

So a cell is filled here only where a listing writes the number down. An unnumbered mention of NSF/ANSI fills nothing, and a similar-looking cartridge holding all three numbers never lends them to a cartridge that holds one.

What each cartridge listing actually names

Every cartridge code here whose genuine listing states either a standard number or a replacement interval. 8 of the 9 qualify; ULTRAWF states neither and is on its own page instead.

  • Filter
    EDR1RXD1
    Fits
    Whirlpool and related brands
    Certified to
    4253401
    NSF/ANSI 42, 53, 401
    What the listing claims beyond that
    Reduction of 70 contaminants, a count with no standard attached to it
  • Filter
    EDR2RXD1
    Fits
    Whirlpool and related brands
    Certified to
    4253401
    NSF/ANSI 42, 53, 401
    What the listing claims beyond that
    Reduction of 70 contaminants, the same count as the Filter 1 listing
  • Filter
    EDR4RXD1
    Fits
    Whirlpool and related brands
    Certified to
    4253401
    NSF/ANSI 42, 53, 401
    What the listing claims beyond that
    Reduction of 32 contaminants, against 70 on the Filter 1 and Filter 2 listings with the same named standards
  • Filter
    XWFE
    Fits
    GE
    Certified to
    4253401
    No number named
    What the listing claims beyond that
    Reduction of lead and sulfur, named as substances rather than as certified claims
  • Filter
    RPWFE
    Fits
    GE
    Certified to
    4253401
    No number named
    What the listing claims beyond that
    Reduction of lead and sulfur, named as substances rather than as certified claims
  • Filter
    LT1000P
    Fits
    LG
    Certified to
    4253401
    NSF/ANSI 42, 53, 401
    What the listing claims beyond that
    A six month or 200 gallon capacity, which is a rating rather than a marketing figure but still the manufacturer's statement
  • Filter
    HAF-QIN
    Fits
    Samsung
    Certified to
    4253401
    No number named
    What the listing claims beyond that
    A genuine Samsung part, which is a statement about provenance rather than performance
  • Filter
    HAF-CIN
    Fits
    Samsung
    Certified to
    4253401
    No number named
    What the listing claims beyond that
    A carbon block medium, which describes construction and not performance

Tool

Filter Finder

Brand family, then cartridge code, then the chip. It will not guess a code from a brand, and it will not fill a cell a listing left empty.

Step one, the refrigerator brand family

Pick a brand family to begin

The finder reads what each listing names and nothing else. It fills a certification cell only where a listing writes down a standard number.

How to check your own

  1. Pull the cartridge currently in the refrigerator and read the code molded or printed on its body, not the code on the box it came in.
  2. Find the same code in the refrigerator documentation, which lists the cartridge the appliance was designed for.
  3. Compare that code against the code on the listing you are about to buy, character for character, including any suffix.
  4. If a listing states it replaces your code, treat that as the seller's statement about their own product and check it against your documentation rather than instead of it.
  5. Keep the old cartridge until the new one is installed and running, so there is something to compare against if the fit is wrong.

Nine cartridge codes, one page each

Scroll sideways. Every card shows the chip for that code's genuine listing, which is not always the chip you would predict from the brand on the box.

EDR1RXD1

Whirlpool and related brands

4253401

One genuine listing, all three standard numbers named, no aftermarket alternative here.

EDR1RXD1: everydrop Filter 1

EDR2RXD1

Whirlpool and related brands

4253401

Same three standard numbers as the Filter 1, different cartridge shape.

EDR2RXD1: everydrop Filter 2

EDR4RXD1

Whirlpool and related brands

4253401

Identical named standards to Filters 1 and 2, and a different seller count.

EDR4RXD1: everydrop Filter 4

XWFE

GE

4253401

One genuine cartridge, two aftermarket. The number-naming goes the way you would not expect.

XWFE: the GE cartridge with three listings

RPWFE

GE

4253401

Same unnumbered wording as the XWFE listing, and no aftermarket alternative here.

RPWFE: the other GE cartridge

LT1000P

LG

4253401

Three standard numbers and two ratings, which is more than any other listing here gives.

LT1000P: the LG cartridge with two ratings

HAF-QIN

Samsung

4253401

Genuine, six months, and not one word about a standard.

HAF-QIN: a genuine cartridge that names nothing

HAF-CIN

Samsung

4253401

Carbon block is a construction fact, not a reduction claim.

HAF-CIN: a medium named, a standard not

ULTRAWF

Frigidaire

4253401

An original part, and that is the entire statement.

ULTRAWF: the shortest listing here

Genuine and aftermarket cartridges

Genuine

9 cartridges sold as original parts

Being genuine is a statement about who made the part. It is not a statement about certification. Four of these name all three standard numbers, two name NSF/ANSI with no number, and three name nothing at all.

  • everydrop Filter 1, EDR1RXD1
  • everydrop Filter 2, EDR2RXD1
  • everydrop Filter 4, EDR4RXD1
  • LG LT1000P Refrigerator Filter
  • GE XWFE Refrigerator Filter
  • GE RPWFE Refrigerator Filter
  • Samsung HAF-QIN Refrigerator Filter
  • Samsung HAF-CIN Refrigerator Filter
  • Frigidaire ULTRAWF Pure Source Ultra Filter
Refrigerator Water Filters

Aftermarket

3 cartridges whose fit the seller states

Aftermarket certification is often narrower than the genuine cartridge it replaces: NSF/ANSI 42 alone against 42, 53 and 401. That is a real difference in scope. It is also true here that two aftermarket listings name a number the genuine GE listing never does.

  • Crystala XWFE Compatible Filter
  • GLACIER FRESH XWFE Compatible Filter
  • Waterdrop LG-Compatible Filter and Air Filter, 3 combo
XWFE: the GE cartridge with three listings

This site in four numbers

Bottles have no standard number at all

There is no NSF/ANSI 42 for a tumbler. No number a seller can point at, so the space fills with adjectives: leakproof, cup-holder friendly, cold for 24 hours. These four pages sort the adjectives from the two or three things that can be checked.

Capacity and cup holders

One number is real. The other is an adjective wearing a number's clothes.

Cup-holder friendly, cupholder compatible, cup-holder fit: three phrasings, zero diameters

Lids and leak claims

Four states, not two. The word a seller picked is the most informative thing on the listing.

100% leakproof, where the percentage adds emphasis and no test

Insulation claims

Wall construction is a build. A retention figure without conditions is a mood.

Cold 24 hours, on several listings, with no starting or ambient temperature

Cleaning straws and gaskets

The parts that hold water in are the parts that hold water afterwards.

Dishwasher safe, on the one listing that states it

Tool

Filter Life Check

A gallon rating is a capacity, not a calendar. Give it a daily volume and it prints the arithmetic. The volume is yours; this site does not suggest one.

Step one, what kind of filter

Step two, the rating the listing states

These are the only ratings any listing in this catalog states for this kind of filter. They are read from the data, not typed in here.

Step three, how much water goes through it in a day

The volume you enter is your own figure. This site does not tell anyone how much water to drink. Intake depends on the person, the climate and their health, and drinking too much water carries its own risks. Any volume you type into the tools on this site is your own figure.

Result

Pick a stated rating above. A rating in gallons can be turned into months; a rating already given in months cannot be improved on by arithmetic.

Every formula this tool uses

  • gallons a day = liters a day ÷ 3.785
  • months = stated gallons ÷ (gallons a day × 30.44)
  • months = stated months, when the listing states months and no gallon figure

Manufacturers usually publish both a months figure and a gallon figure. Where both exist, replace the cartridge at whichever arrives first, not at whichever is more convenient.

Six questions, answered without the run-up

One listing from each of the 6 categories

The listing that best answers each category's core job, which is a statement about what the listing states rather than about how anything performs.

Ello Pop & Fill Water Bottle, 22 / 32 / 40 oz
Only listing here stating three sizes

Three stated volumes on one listing: 22, 32 and 40 oz. No other bottle listing in this category gives more than one.

Ello Pop & Fill Water Bottle, 22 / 32 / 40 oz

22 / 32 / 40 oz stated

The listing states a quick-fill lid, leakproof locking, sip or chug spout, BPA-free, double wall vacuum insulated.

The listing states a quick-fill lid, a spout you can sip or chug from, and leakproof locking, in three volumes. "Leakproof" and "BPA-free" are the seller's wording, not measurements published by a test lab. The three sizes are the reason this one sits at the top of a category whose job is carrying a stated volume.

Suits Someone who wants one lid design across a small, medium and large bottle.

View the listing on Amazon
IRON FLASK Wide Mouth with 3 Lids, 32 oz
Most lids stated in this category

Three lids in the box. Every other flask listing here states one lid, so three appears exactly once.

IRON FLASK Wide Mouth with 3 Lids, 32 oz

32 oz stated

The listing states three leakproof lids, BPA-free, cold 24 hours, sweat free.

A 32 oz wide mouth flask that ships with three lids, which is the whole reason a wide mouth thread is worth having. The listing states leakproof lids, BPA-free construction, cold for 24 hours and a sweat free exterior; the 24-hour figure names no conditions.

Suits One flask body that has to serve as a straw bottle, a chug bottle and a lidded cup.

View the listing on Amazon
HydroJug Traveler Tumbler, 40 oz
Only listing here stating triple wall insulation

Triple wall appears on one tumbler listing in this category. Every other insulated listing here says double wall or does not say.

HydroJug Traveler Tumbler, 40 oz

40 oz stated

The listing states triple wall insulation, flip straw lid, leak-resistant, cup-holder friendly, dishwasher safe.

A 40 oz tumbler whose listing states triple wall insulation, a flip straw lid, a cup-holder friendly base and dishwasher safe construction. It also says leak-resistant rather than leakproof, which is the more careful of the two words and worth reading as deliberate.

Suits A commute where the tumbler lives in the holder and gets washed in the machine.

View the listing on Amazon
ZeroWater Pitcher, 10 cup
Only listing here naming IAPMO

IAPMO appears on one pitcher listing in this category. The others name NSF, WQA, or no body at all.

ZeroWater Pitcher, 10 cup

10 cup stated

The listing states IAPMO certification for lead, PFOA/PFOS, chromium and mercury, and a 5-stage filter.

4253401

No standard number is named on the listing. Not named: 42, 53, 401.The listing names IAPMO and names substances, but no NSF/ANSI standard number. Read the IAPMO listing for the exact claims rather than assuming 42, 53 or 401.

A 10 cup pitcher whose listing names IAPMO certification and names the substances the claim covers, which is more specific than most listings in this category manage. It also states a 5-stage filter. Naming a body and naming substances is still not the same as naming an NSF/ANSI standard number.

Suits Someone who wants a listing that names both a certifying body and the substances.

View the listing on Amazon
everydrop Filter 1, EDR1RXD1
Only listing here naming coconut shell carbon

Coconut shell carbon appears on one filter listing in this category. The others name carbon block or name no medium at all.

everydrop Filter 1, EDR1RXD1

6 month life stated

The listing states NSF 42, 53 and 401 certification, reduction of 70 contaminants including 99% microplastics, coconut shell carbon, 6-month life.

4253401

Named on the listing: NSF/ANSI 42, 53, 401.The listing names all three standard numbers, which is why all three cells are filled.

A genuine cartridge whose listing names all three standard numbers, which almost nothing else in this category does. The 70 contaminants and 99% microplastics figures are separate seller claims that sit beside the certification rather than inside it.

Suits A Whirlpool-family fridge that takes the EDR1RXD1 cartridge.

View the listing on Amazon
USB-C Rechargeable Jug Pump
Only listing here stating dual motors

Dual motors appear on one pump listing in this category. The other three state a single pump or say nothing about motor count.

USB-C Rechargeable Jug Pump

The listing states dual motors, fast flow and a fit for 2 to 5 gallon jugs.

A rechargeable pump that sits on a jug and moves water up through a tube. The listing states dual motors, fast flow and a fit for jugs from two to five gallons. It does not heat and it does not chill, because no pump in this category does.

Suits A jug that gets swapped between two and five gallon sizes.

View the listing on Amazon

Three things worth saying plainly

Retention

Why "keeps cold 24 hrs" is not a measurement

A retention claim needs three things to be checkable: what temperature the drink started at, what the room was doing, and what counts as still cold at the end. Not one listing in this catalog supplies any of them. Wall construction, by contrast, is a build you could confirm with a cutaway, and that is the claim worth reading.

Insulation claims

Pumps

Why a pump is not a dispenser

These get listed beside hot and cold dispensers, which is where the confusion begins. Every unit in the pump category here is a battery device that sits on a jug cap and lifts water up a tube at whatever temperature the jug is. Nothing heats. Nothing chills. The category is named for what the hardware does.

Bottle Jug Pumps

Standards

Why one standard number never implies another

NSF/ANSI 42, 53 and 401 are three scopes, not three tiers. A cartridge can hold any combination, and in this catalog every combination appears, including cartridges that name none. Reading 42 as a weaker 53 is the error the three-cell chip was drawn to prevent.

What certification does not cover

Method

How this site is written

More on all of it at About PureSipSpring, and the vocabulary at Glossary.

Start with Standards