ZeroWater 22-Cup Ready-Read 5-Stage Water Filter Dispenser

Water Filters

ZeroWater ZD-022-RR (22-Cup Ready-Read Dispenser)

Name: ZeroWater ZD-022-RR (22-Cup Ready-Read Dispenser)
Brand: ZeroWater

#5 · Best Large-Capacity Fluoride-Removing Dispenser

6.4 /10 Our score

Lowest verified price $36.99 Amazon

Our verdict

A niche choice for big households that want ZeroWater's full demineralization. The PUR dispenser is the better PFAS pick.

Pros

Removes fluoride and dissolved solids
22-cup capacity with spigot
Built-in TDS read-out
Sold by Amazon

Cons

PFOA/PFOS certification only
About four times PUR's filter cost
Demineralizes water
Needs fridge-shelf-edge placement

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Last reviewed November 1, 2026

Review

What to know about ZeroWater ZD-022-RR (22-Cup Ready-Read Dispenser)

A 22-cup countertop/fridge dispenser with a spigot and a built-in TDS read-out. Its Amazon listing says it is IAPMO-certified to reduce PFOA/PFOS, lead, chromium and mercury. It is the large-capacity ZeroWater option for households that want certified PFAS reduction.

Editorial notes

Why it stands out

Why we like it

Its Amazon listing says it is IAPMO-certified to NSF/ANSI 53 for PFOA/PFOS, lead, chromium and mercury. It is the only large-capacity option here that removes fluoride and dissolved solids, and the TDS read-out shows when the filter is spent.

Buy legacy ZeroWater filters for it.

What to know

Skip it if you want Total PFAS certification or low running cost: certification covers PFOA/PFOS only, filters run about $0.90 per gallon, and no lab has tested this unit.

Performance

Score breakdown

PFAS reduction evidence

Strength of proof that the system cuts PFAS: a current NSF/ANSI 53/58 PFOA/PFOS or total-PFAS certification (NSF, WQA or IAPMO) and/or independent lab results (TechGearLab/Tap Score, Quality Water Lab). Certified plus lab-verified scores highest; marketing-only claims score lowest.

7.0

IAPMO NSF/ANSI 53 PFOA/PFOS claim (Amazon listing); not Total PFAS, and this unit has not been lab-tested.

Other contaminant coverage

Certified or lab-verified reduction of lead, chlorine/chloramine, VOCs, pharmaceuticals (NSF 401), microplastics, and for RO, TDS, fluoride, nitrate and arsenic.

8.8

The ZeroWater 5-stage filter removes lead, chromium, mercury and fluoride, down to 0 TDS.

Value

Upfront price plus annual filter cost per gallon, judged against the protection delivered.

4.3

$36.99 sold by Amazon, but filters cost about $0.90 per gallon.

Installation & cabinet fit

DIY difficulty, whether it needs a drilled faucet hole, a drain saddle or an electrical outlet, renter-friendliness, and under-sink footprint (tank vs tankless).

6.0

22-cup dispenser; takes up fridge space and must sit at a shelf edge.

Flow & daily convenience

Flow rate or production speed, filter-change ease, and filter-life reminders.

6.5

Spigot and TDS read-out; the 20-gallon filter can be spent in a few weeks.

Health, materials & sustainability

Lead-free component certification (NSF 372), BPA disclosures, wastewater ratio, energy use, effects on pH and minerals, and any media leaching found in lab tests.

5.0

Demineralizes and lowers pH; frequent cartridge waste.

Reliability & support

Leak reports, warranty length, availability of replacement parts and filters.

6.5

Sold by Amazon; ZeroWater filters are widely available.

Specifications

ZeroWater ZD-022-RR (22-Cup Ready-Read Dispenser) specs

Design

Filter type: 5-stage ion exchange + activated carbon gravity cartridge
Filtration stages: 5

PFAS

PFAS certification (as stated by maker): IAPMO certified to reduce PFOA/PFOS (NSF/ANSI 53)
Third-party certified for PFAS: Yes

Maintenance

Filter capacity (primary cartridge): 20 gal
Est. annual filter cost: 432 USD

Sustainability

Pure-to-drain ratio (RO): N/A (no wastewater)

Installation

Needs electrical outlet: No
Uses dedicated faucet (drilling may be needed): No

Size

Water capacity: 22 cups

Materials

Pitcher body material: Plastic

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Disclosure: We may earn a commission when you purchase through links on this page. This does not affect our editorial rankings.

Prices and availability may change. The retailer's price and availability at checkout govern the transaction.

Retailer	Price	Availability
Walmart	$34.99 Last known price — verified Nov 1, 2026; may have changed	Check at retailer	Check at retailer
AmazonLowest	$36.99	In Stock	View deal

Lowest verified price $36.99

30-day low $34.99

90-day average $36.32

90-day low $34.99

Based on 3 retailer price observations captured during the last 90 days.

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Compare the ZeroWater ZD-022-RR (22-Cup Ready-Read Dispenser) with

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