Which water filters remove TDS?
17 of the 96 current water filters we track are certified to reduce TDS (NSF/ANSI 58 listings). The lowest-priced is the Express Water RO5DX (under-sink reverse osmosis, $190). Counting a year of replacement filters, the cheapest to own is the APEC ROES-50 ($331 the first year). 11 more claim it from brand-run lab tests only, which is not certification.
The EPA secondary for TDS in public drinking water is 500 mg/L. Secondary (non-enforceable) standard. epa.gov Source note
Lowest-priced certified filter, by type
Countertop reverse osmosis
Bluevua ROPOT-Lite$349 to buy · $115/yr for 2 · NSF/ANSI 58
Check price on Amazon →Certified to reduce TDS (17)
Each row is a certifier listing for this exact product with TDS in its reduction claims; the listing is linked. Yearly cost is replacement filters (plus drain water for RO) for 2 people, from each brand's filter prices and ratings.
Brand tests only, not certified (11)
These brands cite a lab report for TDS, but no certifier lists the claim for the product. A lab report can be real; it is not an independent, ongoing certification with factory audits.
- Bluevua RO100ROPOT (Countertop reverse osmosis) · Unnamed third-party lab (Bluevua 'Third-Party Test Reports' page)
- Frizzlife PD600-TAM3 (Under-sink reverse osmosis) · SGS (per Frizzlife leaflet; tested to NSF/ANSI 42/53/58 methods)
- Frizzlife PD800-TAM4 (Under-sink reverse osmosis) · SGS (per Frizzlife leaflet; tested to NSF/ANSI 42/53/58 methods)
- iSpring RCD100 (Countertop reverse osmosis) · SGS (test report XMF23-008713-01, per iSpring)
- SimPure T1-400 (Under-sink reverse osmosis) · SGS-CSTC Ningbo (report NBF23-0005815-01, 2023, client Membrane Solutions)
- SimPure Y7P-BW (Countertop reverse osmosis) · SGS-CSTC Ningbo (report NBF22-010777-02, 2022, client Membrane Solutions)
- Waterdrop D6 (Under-sink reverse osmosis) · Waterdrop (brand claim, no tester named)
- Waterdrop G2P600 (Under-sink reverse osmosis) · Waterdrop (brand claim, no tester named)
- ZeroWater 10-cup pitcher (Pitcher) · Zero Technologies (brand claim; lab not named)
- ZeroWater 32-cup Ready-Read dispenser (Dispenser) · Zero Technologies (brand claim; lab not named)
- ZeroWater 52-cup Ready-Read dispenser (2 filters) (Dispenser) · Zero Technologies (brand claim; lab not named)
No TDS claim (68 filters)
- 3M Aqua-Pure (Solventum) AP903 whole-house
- A. O. Smith AO-US-200 2-Stage Under Sink
- Alexapure Pro gravity filter (Gen 2)
- APEC RO-PERM
- APEC ROES-UV75-SS
- Aquasana Claryum 2-Stage
- Aquasana Claryum 3-Stage
- Aquasana Claryum 3-Stage Max Flow
- Aquasana Claryum Direct Connect
- Aquasana Clean Water Machine
- Aquasana HealthShield whole-house
- Aquasana Rhino + Salt-Free Water Conditioner
- Aquasana Rhino Chloramines whole-house
- Aquasana Rhino Max Flow whole-house
- Aquasana Rhino whole-house (1M gal)
- Berkey Big Berkey
- Berkey Travel Berkey
- Brita Denali 6-cup pitcher (Elite filter)
- Brita Denali 6-cup pitcher (Original filter)
- Brita Elite faucet filter
- Brita Hub countertop filter
- Brita Tahoe pitcher (Elite filter)
- Brita Tahoe pitcher (Standard filter)
- Brita UltraMax dispenser (Elite filter)
- Brita UltraMax dispenser (Original filter)
- Clearly Filtered 3-Stage Under the Sink
- Clearly Filtered pitcher
- Culligan Scout gravity system (2.25 gal)
- Culligan Venture gravity system (3 gal)
- Epic Water Filters Pure XP dispenser
- Epic Water Filters Pure XP pitcher
- Express Water WH300SCKS 3-stage heavy-metal whole-house
- Frizzlife MK99
- Frizzlife SK99
- Hydros 64 oz glass pitcher
- iSpring RCC7P-AK
- iSpring WGB21B 2-stage whole-house
- iSpring WGB21B-PF PFAS whole-house
- iSpring WGB32B whole-house
- LARQ Pitcher 2
- LARQ Pitcher PureVis
- LifeStraw Home 7-cup pitcher
- Multipure Aqualuxe
- Multipure Aquaperform
- Multipure Aquapremier
- Multipure Aquaversa
- Ninja HydraSense
- Pentair Everpure H-1200
- Pentair Everpure H-300-NXT
- PUR 44-cup dispenser (2 filters)
- PUR 7-cup pitcher (basic filter)
- PUR Faucet filter (basic, horizontal)
- PUR PLUS 11-cup pitcher
- PUR PLUS 30-cup dispenser
- PUR PLUS faucet filter
- SpringWell CF1 whole-house
- SpringWell CSF1 filter + FutureSoft salt-free
- SpringWell Lead & Cyst Removal System
- SpringWell PFAS Water Filter System
- US Water Systems Matrixx catalytic carbon backwashing
- Waterdrop 10UA
- Waterdrop 15UC
- Waterdrop Countertop faucet filter CTF-01
- Waterdrop Elfin pitcher PT-05
- Waterdrop King Tank gravity filter (2.25 gal)
- Waterdrop Lucid 10-cup pitcher
- Waterdrop WHF21-FG iron & manganese whole-house
- Waterdrop WHF3T-PG whole-house
Common questions
Which water filters remove TDS?
17 of the 96 current water filters we track are certified to reduce TDS (NSF/ANSI 58 listings). The lowest-priced is the Express Water RO5DX (under-sink reverse osmosis, $190). Counting a year of replacement filters, the cheapest to own is the APEC ROES-50 ($331 the first year). 11 more claim it from brand-run lab tests only, which is not certification.
Is there a legal limit for TDS in tap water?
The EPA secondary for TDS in public drinking water is 500 mg/L. RO is the usual TDS-reducing technology (EPA WaterSense guide: RO removes dissolved inorganics); an NSF/ANSI 58 TDS claim was not confirmed from an opened source.
How do I know a filter really removes TDS?
Look it up in the certifier's public database (NSF, WQA, IAPMO or CSA) under the exact model, and check that TDS is in its list of reduction claims (usually under NSF/ANSI 42). "Tested to NSF standards" in an ad is not the same as a listing.