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Quick answer from a licensed plumber: Look for NSF/ANSI 401 with Microplastics on the certifier’s listing for your exact model and filter. For a separate drinking-water tap, the Pentair Everpure H-104: NSF lists microplastics, and Pentair rates the cartridge at 1,000 gallons. For no plumbing, the PUR PLUS PFM350V faucet mount. For a pitcher, the PUR PLUS 7-cup with the PPF951K filter only. If your fridge takes one, the everydrop Filter 4 or Filter 1.
Our pick for most kitchens: the Pentair Everpure H-104, with Microplastics Reduction on its NSF/ANSI 401 listing. Check the Everpure H-104 on Amazon
A filter only has a certified microplastics claim if a certifier’s public listing says so for that exact model and filter. This page only includes filters whose listing names microplastics, and links each one to the listing. Every linked pick was sold by Amazon.com on October 4, 2026. For how the NSF standards work in general, see our guide to NSF-certified water filters.
Microplastics Filters Compared
| Filter | Type | Microplastics claim (listing) | Other 401 claims (our count) | Capacity (listing or maker) | Flow (listing) |
|---|---|---|---|---|---|
| Everpure H-104 | Under sink, own faucet | NSF/ANSI 401, NSF | None | 1,000 gal | 0.5 gpm |
| PUR PLUS PFM350V | Faucet mount | NSF/ANSI 401, NSF | 14 | 100 gal | 0.52 gpm |
| PUR PLUS 7-cup pitcher | Pitcher | NSF/ANSI 401, NSF (PPF951K filter only) | 8 | 40 gal | 2 gal/day (PUR) |
| everydrop Filter 4 | Refrigerator | NSF/ANSI 401, NSF | 13 | 200 gal with indicator; 100 without | 0.7 gpm |
| everydrop Filter 1 | Refrigerator | NSF/ANSI 401, NSF | 9 | 200 gal; 100 gal in a system NSF lists without an indicator | 0.5 gpm |
| 3M Aqua-Pure AP-DWS1000 | Under sink, own faucet | NSF/ANSI 401, NSF | None | 625 gal (auto shut-off) | 0.6 gpm |
Claims, capacities and flow rates from NSF’s NSF/ANSI 401 listings, read on October 3, 2026; the Everpure capacity is Pentair’s rating, and PUR’s pitcher flow is from its data sheet. “Other 401 claims” counts the other emerging compounds on the same listing row, such as BPA or ibuprofen. Every linked listing was sold by Amazon.com and in stock on October 4, 2026.
Which Certification Covers Microplastics?
NSF/ANSI 401. NSF’s directory calls 401 the standard for “Emerging Compounds/Incidental Contaminants,” and in NSF’s listings microplastics is one of its reduction claims, listed as “Microplastics Reduction.” When we searched on October 3, 2026, NSF’s 401 listings named it for 1,125 products from 54 companies. Its NSF/ANSI 53 and 58 listings, the health-effects and reverse osmosis standards, did not name microplastics once. WQA and IAPMO list 401 claims the same way, so a filter certified by either of them counts too.
The data sheets show what the claim means in practice. PUR’s data sheets list the microplastics test with at least 10,000 particles per milliliter and an 85% reduction requirement, and Pentair says its cartridge reduces particles as small as 0.5 micron by mechanical means.
Read the model, not the brand
The claim belongs to a specific system with a specific filter. NSF lists the same PUR pitcher with Microplastics Reduction when it uses the PUR PLUS PPF951K filter and without it when it uses the basic PPF900Z. WQA’s 401 listing for Brita names microplastics for the Everyday OB46 pitcher; our water filter pitcher guide covers which Brita pitchers carry it. An everydrop Filter 4 is rated for 200 gallons in one refrigerator and 100 in another. And a listing says “certified,” not “tested to NSF standards”; only the first is a certification.
What about reverse osmosis and countertop units?
A reverse osmosis system’s NSF/ANSI 58 listing does not cover microplastics, because 58 has no microplastics claim in NSF’s listings. Some RO and countertop units carry a separate 401 listing that does; our countertop water filter guide shows which countertop units have one. For under-sink RO, check for a 401 listing by model before you buy.
Pentair Everpure H-104 Drinking Water System
NSF/ANSI 401: Microplastics (NSF listing) · also NSF/ANSI 42 and 53, cysts by mechanical means, per Pentair · 1,000 gal or up to 1 year · 0.5 gpm · 3/8 in. quick-connect inlet · 10 to 125 psi, 35 to 100 °F, cold water only · needs 5 in. W × 20 in. H × 5 in. D under the sink · side faucet included · cartridge EV961211
This is the pick if you want filtered drinking water from its own faucet and the fewest cartridge changes. NSF’s NSF/ANSI 401 listing for Pentair Residential Filtration names the Everpure H-104 with Microplastics Reduction at 0.5 gallons per minute, and Pentair rates the cartridge at 1,000 gallons or up to a year. Pentair’s spec sheet adds NSF/ANSI 42 and 53 certification, lists chlorine taste and odor, lead, microplastics and cysts, and says the cartridge reduces particles as small as 0.5 micron by mechanical means.
It is a plumbing job, not a countertop gadget. The H-104 feeds a separate drinking water faucet, which comes in the box, so you need a spare sink hole or a new one. Pentair says to mount it vertically with the cartridge hanging down, keep the tubing short, and flush a new cartridge at full flow for three minutes. Plan on 5 by 20 by 5 inches of space under the sink, including room to drop the cartridge. Microplastics is the only 401 claim on its NSF listing, so it is not the filter for drug residues or pesticides.
- Microplastics Reduction on NSF’s 401 listing
- 1,000 gallons, up to a year per cartridge, per Pentair
- Also certified to NSF/ANSI 42 and 53, per Pentair
- Dedicated faucet included
- Needs a sink hole for the side faucet
- Microplastics is its only NSF/ANSI 401 claim
- Cold water only, 35 to 100 °F
Verdict: The pick for a kitchen where you want a separate drinking-water tap and a cartridge that lasts about a year.
PUR PLUS Faucet Mount PFM350V
NSF/ANSI 401: Microplastics plus 14 other compounds (NSF listing, our count) · filter RF-9999 · 100 gal · 0.52 gpm · 34 to 82 °F, 20 to 100 psi, per PUR · PUR’s sheet: microplastics 99.65%, lead 99.70% at pH 6.5 · fits faucets with a visible external aerator, per the Amazon listing
If you cannot or will not plumb anything in, this is the quickest certified fix. NSF’s 401 listing for Kaz USA, the company behind PUR, names the PFM350V with the RF-9999 filter for Microplastics Reduction and 14 other emerging compounds, at 100 gallons and 0.52 gallons per minute. PUR’s October 2025 performance data sheet lists an average 99.65% microplastics reduction and 99.70% lead reduction at pH 6.5 for the RF9999 filter.
The trade-off is filter life. One RF-9999 is rated for 100 gallons, so you will change it far more often than an under-sink cartridge. PUR’s sheet limits it to water between 34 and 82 °F, so never run hot water through it, and to 20 to 100 psi. The Amazon listing says it fits most faucets with a visible external aerator; pull-down and pull-out kitchen faucets usually do not have one. NSF’s listing for the PFM350V names the RF-9999 filter, so reorder that one.
- Microplastics plus 14 other 401 compounds on NSF’s listing (our count)
- No plumbing: threads onto the faucet
- PUR lists 99.65% microplastics reduction
- Lead reduction certified under NSF/ANSI 53, per PUR’s sheet
- 100 gallons per filter
- Cold water only: 82 °F maximum, per PUR
- Does not fit faucets without an external aerator
Verdict: The pick for renters and for anyone who wants certified microplastics reduction at the kitchen tap today.
PUR PLUS 7-Cup Pitcher (PPT711)
NSF/ANSI 401: Microplastics plus 8 other compounds with the PUR PLUS PPF951K filter (NSF listing, our count) · no microplastics claim with the basic PPF900Z filter · 40 gal per filter · 2 gal/day rated service flow · 34 to 82 °F, per PUR · PUR’s sheet: microplastics 99.8%
A pitcher is the easiest way in, but this one shows why you read the filter model, not just the brand. NSF lists the PPT711W pitcher twice. With the PUR PLUS PPF951K filter, its 401 row names Microplastics Reduction and eight other compounds. With PUR’s basic PPF900Z filter, the same pitcher’s 401 row names only linuron and trimethoprim. PUR’s own data sheet agrees: 99.8% microplastics reduction for the PPF951K and “Not Certified” for the PPF900Z.
The Amazon listing we link is the 7-cup PUR Plus pitcher with one filter included; check that it is a PPF951K. PUR rates each filter at 40 gallons, with a rated service flow of 2 gallons a day, and limits the water to 34 to 82 °F. PUR’s sheet also says the filter is not meant to purify water and should not be used on water that is microbiologically unsafe or of unknown quality without disinfection. When you reorder, buy PUR PLUS filters (PPF951K), not the plain PUR filter.
- Microplastics on NSF’s 401 listing with the PPF951K filter
- PUR lists 99.8% microplastics reduction
- No installation; fits a fridge door, per the listing
- NSF’s listing names the refill to reorder: PUR PLUS PPF951K
- 40 gallons per filter
- The basic PUR PPF900Z filter has no microplastics claim
- Filters one 7-cup batch at a time, not on demand
Verdict: The pick for one or two people who want a certified microplastics claim without touching the plumbing.
everydrop by Whirlpool Filter 4 and Filter 1
Filter 4 (EDR4RXD1): NSF/ANSI 401 Microplastics plus 13 other compounds (NSF listing, our count) · 200 gal in refrigerators with a filter indicator, 100 gal without · 0.7 gpm · Filter 1 (EDR1RXD1): Microplastics plus 9 other compounds · 200 gal, or 100 gal in a system NSF lists without a performance indicator (W11602565) · 0.5 gpm · fits Whirlpool, Maytag, KitchenAid, Amana and JennAir models, per the listing
If your refrigerator already has a water filter, the simplest microplastics fix may be the right replacement cartridge. NSF’s 401 listing for Whirlpool names Microplastics Reduction for the everydrop Filter 4 (EDR4RXD1) and Filter 1 (EDR1RXD1). For Filter 4, NSF’s listing gives 200 gallons for the version used in a refrigerator with a performance indicator and 100 gallons for the version used in one without, so the same filter lasts half as long in a fridge with no indicator. Filter 1 is listed at 200 gallons in one system (P8WB2L) and at 100 gallons in another that NSF notes has no performance indicator (W11602565), so plan on 100 gallons if your refrigerator has no filter indicator.
Only buy the filter your refrigerator takes. The Amazon listings say to match the number and color on your current filter and to replace it every six months or 200 gallons. Look-alike cartridges are not covered by this listing. One older Filter 4 data sheet we found online, hosted by a retailer, has no microplastics row; NSF’s current listing does, so go by the listing.
- Microplastics on NSF’s 401 listing for both filters
- No extra plumbing if your fridge already takes one
- Also covers ice from the fridge
- Official filter for Whirlpool, Maytag, KitchenAid, Amana and JennAir, per the listing
- Only fits refrigerators that take that filter number
- Filter 4 and Filter 1 are both listed at 100 gallons in systems without a filter indicator
- Only the fridge dispenser is filtered
Verdict: Buy it if your refrigerator takes Filter 4 or Filter 1 and you drink from the door.
I send an occasional note when a new guide goes up — repairs worth doing yourself, and the parts that actually last. No spam, no course funnel; written by a licensed Georgia plumber.
Also Worth a Look: 3M Aqua-Pure AP-DWS1000
The 3M Aqua-Pure AP-DWS1000 is the other under-sink dedicated-faucet system we found with Microplastics Reduction on its NSF/ANSI 401 listing, which NSF files under Solventum Purification Inc., at a 3M Center address. NSF lists it at 0.6 gallons per minute and 625 gallons with the AP-DW80 or AP-DW90 cartridge, and the Amazon listing says it shuts itself off after 625 gallons as a reminder to change the cartridge. Like the Everpure, microplastics is its only 401 claim. On October 4, 2026 its Amazon listing was sold by a third-party seller only, so we name it here without a link.
Before You Buy
- Find the listing. Search NSF, WQA or IAPMO for the exact model and filter, and look for Microplastics under NSF/ANSI 401.
- Match the filter. Refills without the claim fit the same housing. Reorder the certified filter by model number.
- Count the gallons. 40 gallons for the pitcher and 100 for the faucet mount, per NSF’s listings, and 1,000 for the Everpure, per Pentair.
- Cold water only. PUR limits its filters to 82 °F and Pentair to 100 °F.
- Know what else is in your water. A microplastics claim says nothing about fluoride, nitrate or arsenic. Read your water report and match each concern to a listed claim.
FAQ
Which certification covers microplastics in a water filter?
NSF/ANSI 401. In NSF’s listings, microplastics is a reduction claim under 401, the standard for emerging compounds and incidental contaminants. NSF’s 53 and 58 listings did not name microplastics anywhere when we checked them on October 3, 2026.
Does reverse osmosis remove microplastics?
An RO system’s NSF/ANSI 58 listing does not cover microplastics, because 58 has no microplastics claim in NSF’s listings. If you want a certified microplastics claim from an RO unit, look for a separate NSF/ANSI 401 listing that names microplastics.
Do Brita filters remove microplastics?
Some Brita pitchers do, by listing. WQA’s NSF/ANSI 401 listing for Brita names microplastics for the Everyday OB46 pitcher. Check your pitcher model and filter on the listing; our pitcher guide covers which Brita models carry which claims.
Does a PUR filter remove microplastics?
Only the PUR PLUS filters on this page. NSF lists the PPT711W pitcher with Microplastics Reduction when it uses the PUR PLUS PPF951K filter, but not with the basic PPF900Z filter. PUR’s own data sheet marks the PPF900Z “Not Certified” for microplastics.
How do I check a filter’s microplastics claim myself?
Search the certifier’s public listing for the exact model and filter: NSF, WQA or IAPMO. Look under NSF/ANSI 401 for a line that says Microplastics Reduction or Microplastics. A box that says “tested to NSF standards” is not the same as a listing.
Why Trust Plumbing Picks
Plumbing Picks is written by a licensed Georgia journeyman plumber. Every microplastics claim here comes from a certifier’s public listing linked below, and every other spec from the maker documents or the Amazon listings we link; nothing comes from hands-on testing. On October 4, 2026, every linked listing was in stock and sold by Amazon.com. If you buy through a link we may earn a commission at no extra cost to you. Nobody pays to be included here. More on who writes this and how we pick.
Sources
- NSF: NSF/ANSI 401 listings filtered to Microplastics Reduction, NSF/ANSI 53 listings, NSF/ANSI 58 listings
- NSF: NSF/ANSI 401 listing, Pentair Residential Filtration (Everpure H-104), Pentair: Everpure H-104 specification sheet 310910
- NSF: NSF/ANSI 401 listing, Kaz USA (PUR faucet mounts and pitchers), PUR: faucet mount performance data sheet (RF9999/RF3375, Oct 2025), PUR: pitcher and dispenser performance data sheet (PPF951K/PPF900Z)
- NSF: NSF/ANSI 401 listing, Whirlpool Corporation (everydrop refrigerator filters)
- NSF: NSF/ANSI 401 listing, Solventum Purification (3M Aqua-Pure AP-DWS1000)
- WQA: NSF/ANSI 401 listing, Brita LP (Everyday OB46)
- Amazon listings for the Everpure H-104, PUR PLUS PFM350V faucet mount, PUR PLUS 7-cup pitcher, everydrop Filter 4 and Filter 1 (linked above), and the 3M Aqua-Pure AP-DWS1000 (not linked: third-party seller only on 10/4/2026)
Bottom Line
Buy the Everpure H-104 for a dedicated drinking-water tap with a 1,000-gallon cartridge, the PUR PLUS PFM350V if you want no plumbing, the PUR PLUS pitcher with PPF951K filters for the least setup, and the everydrop filter your refrigerator already takes. Whatever you buy, check the listing for the exact model and filter, and reorder the same certified cartridge.