# PUR PFM350V Faucet Filter

# PUR PFM350V Faucet Filter: Three Standards and a Hundred Gallon Cartridge

**strong** PUR publishes a performance data sheet that names *em*, the three standards on it (*em*), a *em* capacity, and a rated service flow of *em*. Then it asks you to change the cartridge every *em*, which is about **strong** and about **strong** at the band we hold. Rank **strong** on the day we last checked.

[PUR Faucet Filter Specs](#specs)
[PUR Faucet Filter Score](#score)
[Who the PUR Faucet Filter Fits](#who)
[PUR Faucet Filter Pros and Cons](#proscons)
[PUR Faucet Filter Cost Per Gallon](#cost)
[PUR Faucet Filter vs the Field](#compare)
[PUR Faucet Filter FAQ](#faq)
[Where the PUR Faucet Filter 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, an IAPMO, NSF or WQA certification record, or a published performance data sheet, 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/B07DDXJDVX?tag=waterfilternerd-20&linkCode=ogi&th=1&psc=1)

## PUR PFM350V Faucet Filter Specs: What 100 Gallons Actually Holds

**strong** Model PFM350V, sold as part of the PUR Plus line, with a three position lever on top for filtered, unfiltered and spray. Nothing sits on the counter and nothing gets plumbed.

For where it sits against the rest of the aisle, our [faucet mount water filter rankings](/best-faucet-mount-filters) hold the running list, and the [rest of the PUR lineup](/pur-review) runs the same 100 gallon cartridge across every mount PUR sells. Here is what the documents say. The standards are unpacked term by term in our [NSF certification guide](/nsf-certifications-explained).

- Certification under test: PUR's performance data sheet says the faucet mount models have been tested according to NSF/ANSI 42, 53 and 401, and it prints the reduction table for all three. Standard 53 is the health list, including lead, mercury and the volatile organic chemicals. Standard 401 covers trace compounds such as pharmaceuticals and flame retardants. Three standards on a faucet mount is the widest set on file, where the Brita, Culligan and WINGSOL mounts carry two.

- Rated capacity: 100 gallons, stated in the data sheet as the filter capacity for every faucet mount model that takes this cartridge.

- Rated service flow: 0.52 gallons per minute, published in the same data sheet. That's about 67 ounces a minute, so an eight ounce glass takes about seven seconds of pulling the lever.

- Service interval: 3 months. The storefront says to change it every three months and the data sheet pairs the same 100 gallon capacity with it, which makes the clock the binding limit for most households. The lever tells you when: a light on the housing counts down.

- Pressure and temperature windows: the data sheet gives 20 to 100 psig working pressure and a usable water temperature of 34 to 82 Fahrenheit. Warm water is outside the certification, so the filter only runs on the cold side.

- Contaminant claim: 70 chemical and physical substances, per the storefront and the listing. The data sheet is the document behind the number, and it prints the reduction percentage for each substance it lists.

- What it does not do: the data sheet's own footnote reads PUR doesn't filter microbes, so this isn't a microbiological barrier and the page treats it as chemistry only.

- Fit: the mount screws on where the aerator was, and PUR ships adapters for the common thread sizes. Faucets with a visible external aerator are the target. A pull down spray head, a non removable aerator or a very low spout that the housing would hit are all reasons to measure before ordering.

- Price band: $30 to $36 at our last check, in stock, sold and shipped by Amazon.com, buy box winner. Treat that as a band and check the listing for the live figure.

- Category position: rank 6 in Faucet Mount Filters at our last check, with its replacement cartridge two pack at rank 1 in Replacement Faucet Water Filters. The consumable outsells every mount it fits.

- Not published: a listing number, a micron rating, and the physical dimensions of the mount itself. Those three omissions cost this system the transparency point, and the page says so below.

**strong** *em*

**strong** At one gallon daily the tank would last 100 days, and the 3 month clock ends it at about 91. *em*

Think of it this way

**strong** Standard 42 sharpens the taste, standard 53 takes on the health list, and 401 handles the compounds that show up in traces. *em*

Gallons per cartridge, five faucet mounts in our records
Bar chart of rated cartridge capacity for faucet mounts: the WINGSOL WS-FM002 is rated 350 gallons, the Waterdrop FC-01 320 gallons, the Culligan CULFMWH 200 gallons, and both the PUR PFM350V in this review and the Brita faucet cartridge 100 gallons.
Gallons per cartridge, five faucet mounts
Rated capacity per manufacturer documentation and certification records

- 0 100 200 300 400 gal WINGSOL WS-FM002 Waterdrop FC-01 Culligan CULFMWH Brita faucet cartridge PUR PFM350V 350 gal 320 gal 200 gal 100 gal 100 gal Capacity from manufacturer documentation. The FC-01 figure is its cartridge rating. Rated capacity per cartridge for five faucet mounts in our records. The navy bar is this system. A hundred gallons is the floor of this aisle, and it's the number the whole running cost is built on. Open the PFM350V spec sheet ## PUR PFM350V Faucet Filter Score: 4 of 7 Every product in this index is rated 1 to 7 across seven verifiable criteria, one point each, with no partial credit. I am an enthusiast with a long memory and a spreadsheet, not a lab, and the scorecard below is the entire method in one table. Each line asks two questions: is the number on the record, and does it hold up against the rest of the class. The line stays at zero when the document is missing or the figure is the worst in its class. Three of the 7 points are gone here, and only one of them is paperwork. Criterion Points Evidence Certified removal scope1 pointNSF/ANSI 42, 53 and 401 with a printed reduction table for all three, the widest standard set we have on a faucet mount Certification and test transparency0 pointsA data sheet that names the model and the standards, but no certified or listing number, and the sheet says tested while the storefront says certified Filter life and rated capacity0 points100 gallons, the shortest rating in the faucet mount aisle, tied with the Brita cartridge Cost per gallon0 pointsAbout 13 to 15 cents, tied with the Brita cartridge at the top of our faucet records against about 4 cents for the Waterdrop FC-01 Flow rate and pressure drop1 point0.52 gpm rated service flow and a 20 to 100 psig window, both published in the data sheet Install and footprint1 pointScrews on where the aerator was, no plumbing, no tools, no counter or cabinet space at all Maintenance burden1 pointA 3 month clock, so about 4 cartridges a year at a gallon a day, which is the rhythm every faucet mount in the aisle runs The three zeros are the paperwork, the tank size and the running cost. The transparency line is the strangest of the three, because PUR publishes more than anyone else in this aisle and still misses it: a data sheet and a storefront claim are not a number a reader can key in, and a number is what the criterion asks for. One missing serial costs this system 1 of the 7 points, and nothing about the water quality changes because of it. The other two zeros are one fact measured two ways. 100 gallons is the floor of the faucet mount aisle, and the cents per gallon that follow are the same 100 gallons divided into the same cartridge band. The tank and the bill are the calendar in two hats. The clock itself scores the point: 4 changes a year is what every faucet mount in our records asks for, Brita's included, so it holds up against the class rather than against the calendar. Want 320 gallons a cartridge? The FC-01 ## Who This PUR Faucet Filter Fits The question is never which filter is best. It's which filter matches your tap, your sink, and the contaminant you actually named before you started shopping. This one answers the renter question and the lead question at the same time, and it answers the throughput question worst: 100 gallons a cartridge and 4 changes a year. If the tap isn't yours to modify, our filter picks for renters start with the mounts that unscrew in one turn. Pick your side. If you want a filtered lever and nothing else to learn, this is the shortest path in the category. The lead worrier in a rental: standard 53 is on the certification list, with lead and mercury in the reduction table, and nothing has to be drilled, cut or approved by a landlord.

- The trace compound reader: standard 401 is rare on a faucet mount. It covers the pharmaceuticals and flame retardants that turn up in trace amounts, and PUR certified the same cartridge to it.

- The small household: a hundred gallons is about a gallon every day for three months, which is where the clock and the capacity land at the same time.

- The apartment kitchen with no counter room: the mount hangs on the spout, so the counter and the cabinet keep every inch they had.

- The person who moves: the whole thing unscrews in one turn, which isn't something a plumbed system can say.

#### This Is Not Your Filter If

- You drink more than about a gallon and a half a day. Four cartridges a year becomes five or six, and the arithmetic below gets worse from there.

- You want the cheapest gallon. The FC-01 mount does 320 gallons for a similar cartridge price, which is about a quarter of this running cost.

- You're on well water. Certified testing assumes a municipal supply, and a sediment load ahead of this cartridge is outside the sheet.

- You expect a microbiological barrier. PUR's own data sheet says it does not filter microbes, so this is chemistry, not disinfection.

- Your faucet has no removable aerator, or a spray head that drops. There's no adapter for a faucet that doesn't take one.

The way I see it

**strong** The counter belongs to the landlord, the pipes belong to the building, and the aerator belongs to you for as long as you pay the water bill. *em*

Standards named in the certification record, per faucet mount
Bar chart of the number of NSF/ANSI standards named in each faucet mount's certification record: the PUR PFM350V in this review names three, 42, 53 and 401, while the Brita, Culligan and WINGSOL faucet mounts each name two.
Standards named in each record
Count of NSF/ANSI standards in our certification records, per faucet mount

- 0 1 2 3 4 Brita faucet mount Culligan CULFMWH WINGSOL WS-FM002 Waterdrop FC-01 PUR PFM350V 42, 53 42, 53 42, 53 no standard number recorded 42, 53, 401 Standards from our certification records and manufacturer data sheets, checked against the documents. Standards named per faucet mount. The navy bar is this system. The FC-01 mount is not scored against a standard number here because its own record names none, and the blank space on that row is as much a finding as the bar on this one. Fitting a Culligan instead? The 200 gallon body ## PUR Faucet Filter Pros and Cons #### What You Get Three standards, one cartridge: 42 for taste, 53 for the health list, 401 for trace compounds, with a reduction table printed for each.

- A real performance data sheet: it names this model, the capacity and the flow rate, which is more than most faucet mounts publish.

- Zero counter space: the whole device lives on the spout, so a small kitchen keeps its cutting board real estate.

- No plumbing and no tools: the mount replaces the aerator, and the manufacturer's own steps are remove, identify, attach.

- A filter light on the housing: the countdown is on the device rather than in your head, and a three second press resets it.

- A consumable you can buy anywhere: the RF-9999 family sits at rank 1 in Replacement Faucet Water Filters, so the cartridge is not a scavenger hunt.

#### What It Costs You

- 100 gallons a cartridge: the floor of the aisle, tied with Brita and half the Culligan at a similar mount price.

- A cartridge every season: the 3 month clock, not the capacity, is what retires the filter in an ordinary household.

- About 14 cents a gallon: roughly 3.5 times the FC-01, on a much smaller tank.

- Paperwork gap: a data sheet is not a number a reader can key in, and the same product is described as tested on one surface and certified on another.

- No micron rating published: so the microplastics claim rests on the storefront sentence rather than on a number in the sheet.

- Fit is not universal: a faucet without a removable aerator, or a pull down spray head, won't take this mount at all.

[Keep the genuine cartridge in twos](https://www.amazon.com/dp/B0009G6MLQ?tag=waterfilternerd-20&linkCode=ogi&th=1&psc=1)

## PUR Faucet Filter Cost Per Gallon

**strong** A faucet mount looks like the cheap option in the aisle and it is, until the calendar starts handing you a new cartridge every season. Four of them a year is about $50 to $60, and the consistent math lives in our [replacement cartridge comparisons](/best-replacement-cartridges).

- The system: a $30 to $36 band at our last check, first cartridge included.

- The cartridge: the genuine RF-9999 two pack sits in the $25 to $30 band in the same records, which is $13 to $15 per cartridge. Divide by the rated 100 gallons and you get about 13 to 15 cents per gallon.

- The clock changes the answer: drinking a gallon daily, you use 91 gallons in three months, so the calendar retires the cartridge 9 gallons early and your real figure is the same 13 to 15 cents on slightly less water.

- The annual reality: 4 cartridges at the band above is about $50 to $60 a year, on a mount that cost about $33. That's roughly a dollar a week to filter the drinking water in a house of four.

- The same math on the cheapest mount we carry: the FC-01 at 320 gallons a cartridge, about 4 cents a gallon and about $15 a year at one cartridge every six weeks.

- The same math on a pitcher: a Brita pitcher cartridge is about 12 to 14 cents a gallon at 40 gallons. A faucet mount beats a pitcher on volume, not on cents.

*em* **strong** You pay about 14 cents a gallon for the flow, the counter space you did not spend, and three standards on the sheet. **strong**

Think of it this way

**strong** Three months of sitting wet is the reason the calendar exists, and it is the reason you buy 4 a year whether you drink a quart a week or a gallon every day. *em*

Cartridge changes a year at one gallon a day, four faucet mounts
Bar chart of cartridge changes per year at one gallon of drinking water a day: the PUR PFM350V in this review needs about four changes a year on its three month clock, the FC-01 about four, the Culligan CULFMWH about two on its 200 gallon rating, and the WINGSOL WS-FM002 about one on its 350 gallon rating.
Cartridge changes a year, at one gallon a day
Whichever limit arrives first, the calendar or the rated capacity

- 0 2 4 6 Waterdrop FC-01 Culligan CULFMWH WINGSOL WS-FM002 PUR PFM350V 4 changes 2 changes 1 change 4 changes 365 gallons a year divided by the binding limit, which is the stated interval where one is published. Cartridge changes a year for one gallon a day. The navy bar is this cartridge. Two of these four filters are retired by a clock rather than a tank, and that's the single most useful number on the page for a two person house. Running a household on it? Price a year of cartridges One two pack covers six months at one gallon daily, and the band on it moves with the season. ## PUR PFM350V Faucet Filter vs the Field Every row below is a faucet mount from our own index, with certifications and capacities from our records. Nothing here is a manufacturer comparison chart, and the upfront figures are bands rather than live prices. Mount Certified Rated life Upfront band PUR PFM350VNSF 42, 53, 401100 gal$30 to $36 Waterdrop FC-01NSF certified320 gal$18 to $22 Culligan CULFMWHNSF 42, 53200 gal$28 to $33 WINGSOL WS-FM002NSF 42, 53350 gal$30 to $36 Brita Elite faucet mountNSF 42, 53100 gal$31 to $38 Two things stand out. First, the certificate set is real and unusual: only this mount in the table is certified to a standard that covers trace compounds, and lead removal filters are a short list where the faucet mounts earn their place through standard 53. Second, the tank sizes are all over the place. The WINGSOL at 350 gallons and the FC-01 at 320 are more than three times this cartridge, and the Waterdrop does it for a lower cartridge price. You're choosing between the widest certified contaminant list and the longest tank, and no mount we carry wins both. Put the 350 gallon rival beside it More than three times the tank on a mount in the same price band, one standard narrower. ## PUR Faucet Filter FAQ Does the PUR PFM350V remove lead? Yes, and it is the standard that carries it rather than a slogan. The performance data sheet names this model and says the faucet mount models have been tested to NSF/ANSI 53, which is the health effects standard, and the sheet prints a reduction figure for lead. The storefront goes further and claims 70 chemical and physical substances, which is a marketing count rather than a certification. Neither surface publishes a listing number, which is why the transparency line sits at zero. How long does a PUR faucet filter last? 100 gallons or 3 months, whichever arrives first. At a gallon daily the calendar wins at about 91 gallons, so the honest planning number is four cartridges a year rather than the 3.65 the capacity alone suggests. A household drinking half a gallon a day still buys four, because the clock does not care. Will it fit my faucet? The mount replaces the aerator, so the requirement is a faucet with a removable one, which is most kitchen faucets. PUR's own instructions are to unscrew the original aerator and washer, identify whether your threading is external or internal, and attach the device with the adapter that matches. A pull down spray head or a sealed aerator is a hard stop, and no adapter solves it. Does it filter bacteria or viruses? No, and PUR says so on its own sheet. The data sheet's footnote reads that PUR does not filter microbes, and this mount is not certified to a microbiological standard. Carbon and ion exchange chemistry is what you are buying: chlorine, taste, the health list under 53 and the trace compounds under 401. A filter that removes cysts or bacteria is a different product with a different certification. How much does a year of PUR cartridges cost? At a gallon a day, about $50 to $60 a year on the two pack band we hold, against a mount that sells for about $33. That is roughly a dollar a week. The listing's own claim of up to $30 a week in savings is a bottled water comparison rather than a filter comparison, and the filter half of that arithmetic is the dollar a week, not the thirty. ## PUR PFM350V Faucet Filter: Where It Lands, Three Standards on a Small Tank The PUR PFM350V earns 4/7, and the zeros divide neatly into paperwork, tank size and cost per gallon. It is tested to NSF/ANSI 42, 53 and 401 with a reduction table printed for all three, its data sheet names the exact model, the capacity and the flow rate, and it installs on the spout without touching a pipe, a counter or a cabinet. It also runs about 13 to 15 cents a gallon on a 100 gallon cartridge that a 3 month clock retires first, publishes no listing number, and carries the shortest tank in the faucet mount aisle. If you want certified trace compound coverage on the tap you already own, this is the most documented mount in our records. If you want the cheapest gallon, the same cartridge money buys more than three times the water one aisle over, and the budget filter list is where that trade is laid out. Three standards, one hundred gallons, a cartridge every season, and no listing number to look up. Check the PFM350V price band ### Where It Lands: A Filtered Lever With a Real Data Sheet Three standards, a printed reduction table, no counter space spent and no pipe touched. A hundred gallons a cartridge and a three month clock are the price of the compact package. Mounting it yourself? The PFM350V ## PUR Faucet Filter Lexicon: Every Standard in This Review NSF/ANSI 42 The aesthetic effects standard, covering chlorine, taste and odor. A filter certified to 42 alone improves how water tastes and claims nothing else. NSF/ANSI 53 The health effects standard, covering contaminants with documented health impacts. Lead, mercury, VOCs and cysts live here, certified per listing. It is the standard that makes a lead claim a fact. NSF/ANSI 401 The emerging compounds standard, covering things found at trace levels: pharmaceuticals, flame retardants, some pesticides. It is the third blade on this cartridge and a rare sight on a faucet mount. WQA The Water Quality Association, a certification body. PUR's own contaminant page says its faucet filters are certified by NSF and WQA, with WQA certifications dated 5/27/21 for the RF-3375 and RF-9999 cartridge models. A certifier named is not a listing number published. Performance data sheet The document that prints the tested reduction figures per contaminant. PUR's names the faucet mount models, the three standards, the 100 gallon capacity and the rated flow. It is the strongest single document in this review, and it still carries no serial number. Rated service flow The flow rate the filter is certified at, in gallons per minute. This one is 0.52 gpm, about 67 ounces a minute, which is why the filtered lever runs slower than the tap it hangs on. Rated capacity The volume a cartridge is certified to filter before performance is no longer covered, in gallons. Here it is 100, the floor of the category, and the number every cost figure on this page divides into. Microbes Bacteria, viruses and cysts. PUR does not filter them, and the data sheet says so in its own footnote. Standard 53 covers cyst reduction as a separate claim, not as a blanket microbiological certificate. Aerator The screened fitting on a faucet spout that mixes air into the stream. This mount replaces it, which is why a faucet without a removable aerator cannot take a faucet mount at all. ## Keep Reading: More PUR Faucet Filter Reviews Best Faucet Mount Water Filters: the parent roundup, every mount in the index ranked by Nerd Stamp and running cost.

- PUR Water Filters Review: the whole PUR lineup, pitchers, dispensers and faucet systems, spec by spec.

- Best Under Sink Water Filters: what you graduate to when the gallon count starts to matter more than the counter space.

- The Nerd Stamp Methodology: how the 1 to 7 rating is calculated.