Purewell PW-OB
Score: 70/100
Epic Nano
Score: 78/100Rankings
The Epic Nano Water Filter Pitcher is a gravity-fed, space-efficient filtration system designed to remove bacteria, viruses, PFAS, heavy metals, and microplastics from drinking water. It features a 10-cup capacity, medical-grade Tritan construction, and NSF/ANSI certifications for standards 42, 53, 401, and P473. Best suited for well water users needing protection against biological contaminants or emergency preparedness scenarios.
The Purewell PW-OB is a 3-stage gravity-fed ultrafiltration system constructed from durable stainless steel, requiring no electricity. It effectively removes bacteria, protozoa, and chlorine but does not reduce TDS. It is best suited for off-grid living, emergency preparedness, or users concerned with sediment and heavy metals in tap water.
| Attribute | | |
|---|---|---|
0.07 GPMbest | 0.037 GPM | |
6 monthsbest | 3.5 months | |
3 stagesbest | — | |
— | 99.99 %best | |
| ↓ lower better | — | 0 PSIbest |
| ↓ lower better | 0.01 micronsbest | — |
| ↓ lower better | 26 inches | 12 inchesbest |
| ↓ lower better | 8.9 inches | 7 inchesbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Health & Safety(1) | ||
Certifications | NSF/ANSI 42, 372 | NSF/ANSI 42, 53, 401, P231, P473 |
Filtration & Performance(4) | ||
Filtration Technology | Ultrafiltration | Gravity-Fed |
Flow Rate (GPM) | 0.07 GPM | 0.037 GPM |
Filtration Stages (stages) | 3 stages | stages |
Micron Rating (microns) | 0.01 microns | microns |
Maintenance & Warranty(2) | ||
Filter Lifespan (months) | 6 months | 3-4 months |
Warranty (years) | years | Lifetime years |
Dimensions & Build(3) | ||
Height (inches) | 26 inches | 12.0 inches |
Width (inches) | 8.9 inches | 7.0 inches |
Depth (inches) | 8.9 inches | 7.0 inches |
Products in the top-left offer the best value (high score, low price).
The search results do not provide direct quotes or detailed assessments from independent professional reviewers or editors. The available information is derived primarily from product descriptions and technical specifications rather than third-party expert evaluations.
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Professional reviewers and editors position the Epic Nano as one of the best water filter pitchers available in its price segment, primarily due to its extensive NSF/ANSI certifications and high contaminant removal rates. It is specifically recommended for well water users dealing with bacteria, viruses, and cysts, as well as for emergency preparedness.
Promotional materials highlight customer satisfaction, emphasizing the product's ability to provide clean hydration and its suitability for watering sensitive plants due to the removal of chlorine and heavy metals.
