The faucet mount is the format most American households meet first, and PUR and Brita own the shelf between them. I recommend the PUR PLUS most often for one unglamorous but decisive reason: it is NSF certified for lead reduction, which almost nothing else at this price is, and its cartridges are on the shelf in every supermarket in the country. Here is what it does well, what it does less well, and the thing to check before ordering.
What it does well
Installation, in five minutes with no tools. Unscrew the aerator, screw on the housing with the right adapter, done. And it is all reversible: on moving day the aerator goes back and nothing is left behind. That is what makes this format unbeatable in a rental.
Taste, which is the real subject. On chlorine, activated carbon does its job without argument. This is established chemistry, not a marketing promise: the first glass after installation is convincing, and stays that way while the cartridge is inside its service life.
Lead, and this is the part that matters. Certification under NSF/ANSI 53 for lead reduction is what separates a health claim from a taste claim. Most pitchers and many faucet mounts are certified 42 only — chlorine and taste. If you live with older plumbing or a lead service line, this is the box to look for, and it is the reason this model is on the page at all.
The filtered/unfiltered lever. The detail that changes everything in use. Rinsing a pan or filling a watering can through the cartridge wastes it for nothing. The lever keeps filtration for what you drink, which noticeably extends cartridge life.
Cartridge availability. Supermarkets, hardware stores, online, everywhere and always. On a product whose real cost is the consumable, that is not a comfort detail: it is what guarantees you are not left with an orphan housing in three years.
The thing to check before ordering
Whether it fits your faucet, and this is the number one reason these get returned, all brands included. Pull-down sprayers and flat spouts will not take a screw-on housing. Neither will faucets with a non-removable integrated aerator.
The test takes ten seconds: try unscrewing your aerator by hand. If it comes off, you have a standard thread and you are fine. If it does not, or if there is no aerator, move to a pitcher or an under-sink filter, which connect differently.
Its limits, plainly
It does not soften water. No carbon filter does, this one included, whatever "scale" wording appears on any packaging. Your kettle will keep going white and so will your shower glass. If that is your problem, check your hardness and see the softener section.
It does not hold nitrate or arsenic. They pass through activated carbon unslowed. If your report shows either near its limit, that is a reverse osmosis subject.
On PFAS, be careful. Some carbon blocks reduce some PFAS compounds, unevenly and only while fresh. A faucet filter is not the answer if PFOA or PFOS are above 4 ppt on your report.
The advertised capacity is optimistic. Like every cartridge rating, it is measured under favorable conditions. For a household that drinks and cooks from the tap, take 20 to 30% off: a cartridge rated for three months is better changed at two and a half.
Flow is adequate rather than exceptional. Fine for a glass, acceptable for a pot, and it slows as the cartridge loads up.
The real cost, recalculated
This is the only figure that allows an honest comparison. $34 for the housing with one cartridge, then the price of the consumable divided by its real capacity. Over three years, counting a change every two and a half months rather than three, you land in the region of $200 to $260 all in, so roughly 20 cents a gallon filtered.
Against what? A pitcher runs around 17 cents a gallon because of its two-month cartridge. An under-sink filter goes well below thanks to its year-long block. Bottled water sits between $1 and $2.
| Model | Micron | Flow | Filter life | Rating | Price | |
|---|---|---|---|---|---|---|
PUR PLUS faucet mount PUR | 1 µm | 0.5 gpm | 3 mo | 4.1/5 | $34 | See price |
Waterdrop 15UB under-sink filter Waterdrop | 0.5 µm | 2 gpm | 12 mo | 4.4/5 | $109 | See price |
Brita Everyday 10-cup pitcher Brita | · | · | 2 mo | 4/5 | $39 | See price |
Prices shown are indicative · affiliate links.
PUR PLUS faucet mount
Strong points
- WQA and NSF certified for lead reduction, which is rare at this price
- Fits most standard faucets in a minute, no tools
- Filters sold in every supermarket in the country
Weak points
- Slow flow, and it gets slower as the filter loads up
- Bulky on the faucet, and it does not fit pull-down sprayers or internal aerators
- Cartridge every 100 gallons — about three months: the running cost adds up
Where to buy
- Amazon$34 See price
Should you prefer something else?
The Waterdrop 15UB if you are staying put for several years. Three times the purchase price, but a cartridge once a year and nothing visible on the faucet. From the second year on, it costs less.
Waterdrop 15UB under-sink filter
Strong points
- NSF/ANSI 42 certified for chlorine, taste and odor, and 372 for lead-free materials
- Twist-in cartridge: a filter change takes three seconds, no tools
- Keeps the minerals — it is carbon block, not reverse osmosis
Weak points
- Lead reduction is third-party TESTED against NSF/ANSI 53, not certified to it — if lead is your reason for filtering, that is a weaker guarantee than it sounds
- Does nothing against nitrate or arsenic
- Proprietary cartridge, and it needs a dedicated faucet or a tee on the cold line
Where to buy
- Amazon$109 See price
The Brita Everyday pitcher if your faucet is incompatible. It is the only way out in that case, with the discipline that comes with it — and if lead is your concern, fit the Elite filter rather than the standard one, which is not certified for it.
Brita Elite replacement filters (2-pack)
Strong points
- The Elite is the Brita filter that is WQA and NSF/ANSI certified for lead — the standard one is not
- Six months, or 120 gallons, per filter, against two months for the standard
- Fits every Brita pitcher and dispenser except the Stream
Weak points
- Noticeably more expensive than the standard filter
- Slower pour
Where to buy
- Amazon$44 See price
What this review rests on
I do not run four filters in parallel on my one kitchen faucet, and I would rather write that here than in a footnote. This review cross-checks verifiable specifications — certifications first — long-run user feedback across several seasons, and what can be measured for a few dollars, like a TDS meter on a before-and-after. What I cannot judge, I do not judge: how the lever holds up after three years of daily use is one of those unknowns, and it is the part that breaks first on this format. My full checklist is in my reviews page.
