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What Filter Removes

Frizzlife SK99 vs Waterdrop 10UA

Only the Frizzlife SK99 is certified to reduce lead and cysts. Verdict: the Frizzlife SK99 for broader certified protection (3 vs 1 of the contaminants we track); the Waterdrop 10UA if running cost matters more. Replacement filters and water for 2 people cost about $105 a year on the Frizzlife SK99 and $31 on the Waterdrop 10UA; they cost $126 and $59 to buy.

Frizzlife SK99Waterdrop 10UA
TypeUnder-sink filterUnder-sink filter
Price$126$59
Filters + water a year (2 people)$105$31
Filter cost per gallon (rated life)—0.3¢
Gallons per day——
Pure to drain——
Installationdiydiy
LeadCertified—
ChlorineCertifiedCertified
ChloramineBrand test only—
FluorideBrand test only—
MercuryBrand test onlyBrand test only
CystsCertified—
VOCsBrand test only—
Check price on Amazon: SK99 →Check price on Amazon: 10UA →