Clearly Filtered Affinity
Three-stage cartridge with the longest published contaminant list in the category.
At a glance
- Fits
- 1 jug
- Rated life
- 100 gallons (379 L) · 4 months
- Evidence
- Lab tested
- Pack sizes
- 1, 2, 3
Clearly Filtered publishes full third-party laboratory reports against a list running to hundreds of contaminants, including fluoride and PFAS — both of which ordinary carbon jugs leave largely untouched. That transparency is genuinely rare and worth something. Read the wording carefully all the same: the testing is to NSF protocols rather than NSF certification, which means the numbers have been produced by an independent laboratory but the process has not been independently audited on an ongoing basis.
Buy Clearly Filtered Affinity cartridges
Sorted by pack size. Per-cartridge cost falls steeply with pack size — this is where the money in this category is saved or wasted.

Clearly Filtered Water Filter Pitcher Replacement
Lab tested- Single
- 100 gallons (379 L) · 4 months
- Fits 1 jug

Clearly Filtered Water Filter Pitcher Replacement
Lab tested- 3-pack
- 100 gallons (379 L) · 4 months
- Fits 1 jug
What it removes — and what it does not
Reduces
Does not reduce
Listed because it is the more useful half. Every cartridge on the market reduces chlorine taste; what separates them is what they leave behind.
Tested to the method of a named standard, usually by an independent laboratory, but not certified — no ongoing audit, no published listing with the certifying body. Better than nothing, weaker than certification, and routinely presented as though it were the same thing.
Jugs that take the Affinity
Clearly Filtered Affinity questions
Which jugs take the Clearly Filtered Affinity?
1 jug in our data take this cartridge: Clearly Filtered Affinity Pitcher.
How long does a Clearly Filtered Affinity cartridge last?
Rated at 100 gallons (379 L) · 4 months.
That is a throughput figure rather than a calendar one. Hard water and heavy use both exhaust a cartridge sooner than the box suggests.
Is the Clearly Filtered Affinity certified?
Tested to the method of a named standard, usually by an independent laboratory, but not certified — no ongoing audit, no published listing with the certifying body. Better than nothing, weaker than certification, and routinely presented as though it were the same thing.