SLF Water Filtration Comparison · 2026
Brita UltraMax 27-Cup
Recommended for families wanting a simple large refrigerator dispenser with meaningful lead reduction and low-maintenance Elite filtration.
Culligan ZeroWater 22-Cup
Recommended for households that want ZeroWater's strong certified filtration in a much more practical family-size format than its smaller pitchers.
Culligan ZeroWater 22-Cup
Choose the 22-Cup over the 10-Cup if fewer refills and dispenser convenience matter; move to the 32-Cup if your household needs still more capacity.
Dispenser Filtration & Ownership
Compare dispenser filtration evidence, usable capacity, filter life and ongoing ownership cost.
Which Is Right for You?
Brita UltraMax 27-Cup
Best for: Families, shared households and frequent water drinkers who want mainstream lead reduction, large capacity and easy-to-find replacement filters.
Consider if: Avoid Plumbing, Renting, Budget Under $100
Culligan ZeroWater 22-Cup
Best for: Families, shared households, frequent water drinkers, apartments and shoppers wanting high-capacity certified filtration without plumbing or electricity.
Consider if: Avoid Plumbing, Renting, Budget Under $100, Want TDS Display
Our Recommendation
Brita UltraMax 27-Cup
An excellent mainstream family dispenser when capacity, lead reduction, retailer availability and low maintenance matter more than RO or microbial filtration.
Culligan ZeroWater 22-Cup
One of the best high-capacity gravity dispensers for contaminant-focused shoppers, especially when PFAS, lead, fluoride and dissolved-solids reduction matter more than mineral retention.
The Short Answer
Choose the UltraMax Elite for 27-cup capacity plus lead reduction and six-month filter life; choose the cheaper Standard-filter UltraMax for basic chlorine/taste filtration, or LifeStraw Home for microbial protection.
Choose the 22-Cup over the 10-Cup if fewer refills and dispenser convenience matter; move to the 32-Cup if your household needs still more capacity.
Water Filter Comparison FAQs
Answers are generated from the current SLF product records for these two systems.
Which is better, Brita UltraMax 27-Cup or Culligan ZeroWater 22-Cup?
Culligan ZeroWater 22-Cup is the overall pick for this specific matchup. Choose the 22-Cup over the 10-Cup if fewer refills and dispenser convenience matter; move to the 32-Cup if your household needs still more capacity.
Which system offers remineralization?
Both systems are listed as no for remineralization in the current SLF records.
Do both systems require a plumbing connection?
Brita UltraMax 27-Cup: No. Culligan ZeroWater 22-Cup: No.
Which system is more renter friendly?
Brita UltraMax 27-Cup: Yes. Culligan ZeroWater 22-Cup: Yes. Check lease and plumbing-modification rules before installing an under-sink system.
What certifications are listed for these systems?
Brita UltraMax 27-Cup: Brita Elite filter performance is certified for compatible Brita systems including UltraMax model OB24. WQA certification covers NSF/ANSI 42, 53 and 401; IAPMO R&T certification under NSF/ANSI 53 includes PFOA/PFOS reduction for the Elite OB06 filter/system combination. Certification should not be generalized beyond compatible Brita housings or the certified performance scope. Culligan ZeroWater 22-Cup: Culligan identifies the current ZEROD22 as independently IAPMO certified. Its published performance table groups certified reductions under NSF/ANSI 42, 53 and 401.