ZeroWater 20-Cup
Score: 88/100
Culligan ZeroWater 32-Cup Water Filter Dispenser
Score: 80/100Rankings
The ZeroWater 20-Cup Ready-Pour is a countertop water filtration dispenser featuring 5-stage ion exchange filtration that removes virtually all dissolved solids, achieving 0 TDS water. It includes a TDS meter for quality verification, though users must manually test the water rather than relying on an automatic display. It is best suited for health-conscious consumers and small offices seeking superior tap water taste and purity verification.
The Culligan with ZeroWater Technology 32 Cup Dispenser is a gravity-fed water filtration system that removes 99.9% of total dissolved solids using a 5-stage filtration process. It includes a built-in TDS meter for real-time water quality monitoring and offers purification comparable to reverse osmosis without requiring electricity. It is best suited for families requiring large quantities of filtered water without frequent refilling and households with high TDS tap water.
| Attribute | | |
|---|---|---|
12 monthsbest | — | |
1.9 gallons per hourbest | — | |
99.6 % | 99.9 %best | |
1.56 gallons | 2 gallonsbest | |
5 stagesbest | 5 stagesbest | |
11.75 inchesbest | 10.5 inches | |
5.5 inches | 6 inchesbest | |
10.63 inches | 14.8 inchesbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance & Filtration(6) | ||
Certifications | NSF 53, IAPMO | IAPMO |
Contaminants Reduced | Lead, Chromium, Mercury, PFOA/PFOS | 25+ Contaminants |
Filtration Technology | Carbon block, Ion exchange | Ion-Exchange |
Filter Lifespan (months) | 12 months | null months |
Flow Rate (gallons per hour) | 1.9 gallons per hour | null gallons per hour |
TDS Reduction (%) | 99.6 % | 99.9 % |
Capacity & Dimensions(5) | ||
Water Capacity (gallons) | 1.56 gallons | 2.0 gallons |
Height (inches) | 11.75 inches | 10.5 inches |
Width (inches) | 5.5 inches | 6.0 inches |
Depth (inches) | 10.63 inches | 14.8 inches |
Product Weight (pounds) | 3.3 pounds | 5.61 pounds |
Design & Installation(2) | ||
Housing Material | BPA-Free Plastic | Plastic |
Filter Type | Ion Exchange | Proprietary |
Products in the top-left offer the best value (high score, low price).
Professional reviewers highlight the product's superior filtration effectiveness, noting it removes significantly more dissolved solids than leading competitors. The inclusion of a TDS meter is praised for eliminating guesswork regarding filter life, though some note legacy spout design issues and the inconvenience of manual testing compared to newer integrated display models.
Users appreciate the product's ability to improve tap water taste and quality, making it suitable for health-conscious consumers and those looking to reduce plastic waste. It is valued as a secondary filtration layer even for homes with whole-house filters, though some users may find the manual testing process less convenient than automatic indicators.
Choose Culligan for real-time monitoring and better flow; choose standard ZeroWater for the specific Ready-Pour model features if available.
Professional reviewers and experts highlight the dispenser's ability to achieve reverse osmosis-level purity without the complexity or electricity requirements of distillation. They praise the 5-stage filtration process for delivering fresh-tasting water that avoids the flat, boiled flavor associated with distillation.
Everyday users consistently praise the water quality results, noting visible improvements in taste and clarity. The large capacity is frequently cited as a major advantage for families, reducing the hassle of constant refilling.
