NSF 42 filters for turbidity

NSF, WQA, or IAPMO listing to NSF/ANSI 42 for Turbidity. Certified is a listing, not a ranking.

We may earn a commission if you buy through these links. Rankings come from the matching engine (certification + flagged contaminants + annual cost), not from who pays more. How we earn money. As an Amazon Associate we earn from qualifying purchases. Prices are not shown; Amazon sets them on its site.

Product	Certifier	Checked
3M Aqua-Pure AP903 Whole House Sanitary Quick Change Filter	NSF	2026-09-14
Aquasana Claryum 2-Stage Under-Sink Filter (AQ-5200)	WQA	2026-09-14
Aquasana Claryum 3-Stage Max Flow Under Sink	WQA	2026-09-14
Aquasana OptimH2O Reverse Osmosis + Claryum	WQA	2026-09-14
Brita Elite Faucet Mount Filter System (formerly Basic/Complete)	WQA	not yet
Brita Large 10-Cup Pitcher with Elite Filter	WQA	2026-09-14
Brondell Coral UC300 Three-Stage Under-Counter Filter	WQA	not yet
Culligan US-EZ-4 EZ-Change Level 4 Under-Sink Filter	IAPMO	not yet
Culligan WH-HD200-C Heavy Duty 1 in Whole House Sediment Filter Housing	WQA	2026-09-14
Epic Smart Shield Inline Under-Sink Filter	IAPMO	2026-09-14
Frizzlife MK99 Under-Sink Direct-Connect Filter	IAPMO	not yet
LifeStraw Home 7-Cup Glass Water Filter Pitcher	WQA	2026-09-14
PUR Basic Vertical Faucet Mount Filter System	IAPMO	not yet
PUR Basic Vertical Faucet Mount Filter System	NSF	2026-09-14
PUR PLUS 11-Cup Pitcher with Lead-Reducing Filter	IAPMO	not yet
PUR PLUS 11-Cup Pitcher with Lead-Reducing Filter	NSF	2026-09-14
PUR PLUS 11-Cup Pitcher with Lead-Reducing Filter	WQA	2026-09-14
PUR PLUS Faucet Mount Filtration System	NSF	2026-09-14
PUR PLUS Faucet Mount Filtration System	WQA	2026-09-14

Turbidity in Treasure Valley drinking water.