iFilters CNTP-1C
Score: 65/100
ZeroWater 20-Cup
Score: 88/100Rankings
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 iFilters CNTP-1C is a portable, single-stage countertop water filtration system designed for easy faucet connection without permanent installation. It utilizes a 0.5-micron coconut shell carbon block filter to reduce chlorine, heavy metals, VOCs, and cysts, making it suitable for renters and small spaces. While it offers strong NSF-certified performance for basic contaminant reduction, it lacks the comprehensive purification capabilities of multi-stage units.
| Attribute | | |
|---|---|---|
6 months | 12 monthsbest | |
— | 1.9 gallons per hourbest | |
0 % | 99.6 %best | |
— | 1.56 gallonsbest | |
1 stages | 5 stagesbest | |
13 inchesbest | 11.75 inches | |
5 inches | 5.5 inchesbest | |
6.5 inches | 10.63 inchesbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance & Filtration(7) | ||
Certifications | NSF/ANSI 372, NSF/ANSI 42 | NSF 53, IAPMO |
Contaminants Reduced | Sediment, Cysts, VOCs, Pesticides, Chloramines | Lead, Chromium, Mercury, PFOA/PFOS |
Filtration Technology | Coconut Carbon Block | Carbon block, Ion exchange |
Filter Lifespan (months) | 6 months | 12 months |
Flow Rate (gallons per hour) | null gallons per hour | 1.9 gallons per hour |
TDS Reduction (%) | 0 % | 99.6 % |
Filtration Stages (stages) | 1 stages | 5 stages |
Capacity & Dimensions(5) | ||
Water Capacity (gallons) | null gallons | 1.56 gallons |
Height (inches) | 13.0 inches | 11.75 inches |
Width (inches) | 5.0 inches | 5.5 inches |
Depth (inches) | 6.5 inches | 10.63 inches |
Product Weight (pounds) | 4.0 pounds | 3.3 pounds |
Design & Installation(3) | ||
Installation Type | Faucet Mount | Countertop |
Housing Material | Plastic | BPA-Free Plastic |
Filter Type | Carbon Block | Ion Exchange |
Products in the top-left offer the best value (high score, low price).
Professional reviewers and editors note that the iFilters CNTP-1C offers strong NSF-certified performance for basic contaminant reduction, particularly chlorine and VOCs. However, experts highlight that as a single-stage carbon block system, it lacks the comprehensive purification capabilities of multi-stage or reverse osmosis units, specifically noting its inability to reduce TDS.
Consumer feedback is limited but generally positive, with high ratings on the official site. Users commonly praise the ease of installation and the noticeable improvement in water taste. Recurring themes in similar products include concerns about filter longevity in high-sediment water and occasional compatibility issues with faucet adapters.
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.
