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TapBuff

Instapure COMPLETE F5 Lead Reducing Faucet Water Filter (F5)

Checked against its certification listings: what they cover, what the maker claims, and what it costs over five years.
Faucet mount

Listings checked Oct. 16, 2026

Certified to

Certified for: Lead, Chlorine

Maker’s list price

$28

as of Oct. 16, 2026

Each replacement, at list price

Replacement filter (R5)
$25

Five years, household of 3

$1,375

25¢ per gallon

Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money

List price from the maker’s site, checked Oct. 16, 2026. Prices change; the maker’s page is the final word.

What the listings say

StandardCertifierClaimsListing
NSF/ANSI 42WQAAesthetic Chlorine; Taste and OdorRead the listing checked Oct. 16, 2026
NSF/ANSI 53WQACyst; LeadRead the listing checked Oct. 16, 2026

Certified for, and claimed

Certified, by a listing

Claimed by the maker only

None recorded.

What it costs over five years

Household of 3, 3 gallons a day of drinking and cooking water. Installation not included.

ItemReplacedCountAmount
System, with first media—1$28
Replacement filter (R5)Every 33 daysgallon rating runs out first54$1,347

Five-year total$1,375

Per gallon25¢

Run it for your household

Worth knowing

WQA lists no Class I particulate claim for it, the second claim EPA suggests looking for in a lead filter. Price recorded is the white model; the chrome one is $29.95. The R5 is also sold as a 2-pack for $29.95, about $15 a filter; the single price is recorded.