Safer Water Filtration Products

Reverse osmosis on the countertop with no plumbing. Certified by IAPMO to NSF/ANSI 42, 53, 58, 401 and 372 for every one of the 83 contaminants it claims to reduce — including PFAS, lead and microplastics. Read more in our water filter guide.

Sub-micron pitcher filter (0.2 micron) certified to remove microplastics, lead, chlorine, and bacteria. Best budget pick for renters and small kitchens — no installation needed.

6-stage reverse osmosis under-sink system with a remineralization stage that adds calcium and magnesium back after filtration. RO membrane (0.0001 micron) eliminates microplastics, nanoplastics, lead, and PFAS. Best whole-kitchen pick.

Tankless reverse osmosis system with 600 GPD throughput. NSF 58 and 372 certified. No storage tank means no bacterial buildup over time. Smart faucet shows TDS reduction in real time.

Triple-stage pitcher independently lab-tested against 365+ contaminants including microplastics, PFAS, and pharmaceuticals. More expensive than LifeStraw but tested against a wider contaminant set.

Gravity-fed stainless steel system that needs no power or plumbing — useful off-grid, in an RV, or during an outage. Berkey states the Black Berkey elements are formulated to address 200+ contaminants and publishes lab reports for heavy metals, pesticides and PFOA. Those reports come from laboratories Berkey commissions, not an NSF/ANSI certification — which is why California and Iowa restrict the sale.

Five-stage ion-exchange pitcher that ZeroWater states is IAPMO certified to reduce lead, chromium and PFOA/PFOS. Every pitcher ships with a meter so you can see when the filter is spent instead of guessing.

Pitcher with a two-layer filter — nano-fiber over a carbon block — that Epic states is NSF certified to NSF/ANSI 42 and 372 and independently tested to NSF/ANSI 42, 53, 401 and P231, with published reductions for microplastics, PFAS, lead and fluoride.

The pitcher most people already own, with Brita’s Elite filter — certified by WQA against NSF/ANSI 42, 53 and 401, which is where its lead and its microplastic-particle claims come from, and by IAPMO against Standard 53 for PFOA/PFOS.

Eleven-cup pitcher using PUR’s lead-reducing filter, which PUR states is WQA certified to reduce lead and NSF certified to reduce microplastics. The shortest filter life here, so check the cost per gallon before buying.

Countertop four-stage reverse osmosis with no plumbing, which AquaTru states is tested and certified by IAPMO to NSF standards to reduce 84 contaminants including lead, chromium 6, PFAS and microplastics.

Under-sink filter that connects to the cold line you already have — no new faucet, no drilling — and which Frizzlife states is certified to NSF/ANSI 42, 53 and 372, with a 1600-gallon cartridge.

Five-stage under-sink reverse osmosis system carrying the Water Quality Association Gold Seal, rated at 50 gallons a day — the value entry into real RO filtration.

Tankless under-sink reverse osmosis that Waterdrop states is certified to NSF/ANSI 42, 58 and 372, with an 0.0001 micron membrane, a three-to-one pure-to-drain ratio and minerals added back after filtering.

Stainless steel gravity filter that ProOne states is certified by IAPMO R&T against NSF/ANSI 372, 42, 53 and 401 — the certified alternative in a category where the best-known name has no certification at all.

Whole-house system that Aquasana states is certified by IAPMO to NSF/ANSI 53 for lead and cysts and to NSF P473 for PFOA and PFOS — filtration where the water enters the house, so every faucet and every shower is covered.

Clip-on faucet filter that PUR states is WQA certified to reduce lead and NSF certified to reduce microplastics — filtered water straight from the faucet, with nothing under the sink and nothing to install.

Nalgene bottle with Epic’s two-stage filter in the straw, which Epic states is NSF certified to Standard 42 and reduces more than 70 tap-water contaminants — filtered water anywhere there is a sink.