Alexapure Pro Gravity Filter — product photo
#13 Ranked

Alexapure Pro Gravity Filter

by Alexapure · Gravity Stainless Steel
Best Mineral Retention
7.5 / 10
6.0 Water Clean.
Primary Quality Score
💧 Water Cleanliness 6.0
⚗️ Optimal pH 7.5
🌿 Minerals 9.0
Overall Score 7.5
Our Verdict

Gravity-fed stainless steel filter with third-party testing claiming 99.9999% bacteria removal and 206+ contaminants reduced. No electricity required — preserves all beneficial minerals.

Key Pros

  • Third-party tested 99.9999% bacteria and 99.99% virus removal
  • Fluoride reduction >97% (Envirotek lab test)
  • Preserves all beneficial minerals — no ion exchange or RO

Key Cons

  • Not formally NSF or IAPMO certified (third-party tested to standards only)
  • Manufacturer's 5,000-gallon filter claim is unverified by independent testing
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Full Review

The Alexapure Pro is a gravity-fed stainless steel filtration system built for households who want powerful contaminant removal without electricity or plumbing. Manufactured by Alexapure (part of the My Patriot Supply group), it follows the same gravity-filtration principle as the Berkey — upper chamber, filter element, lower chamber — but with a notably different certification approach.

The composite block filter element has been third-party tested by Envirotek Laboratories to NSF/ANSI 42 and 53 standards, showing impressive contaminant reduction: 99.9999% bacteria, 99.99% viruses, and claimed removal of over 200 contaminants including fluoride (>97%), pharmaceuticals, pesticides, and heavy metals.

Where Alexapure differs from fully certified systems is formal certification status. Despite the strong lab numbers, the Alexapure Pro does not appear in the NSF International or IAPMO certified product databases. The test results are from a qualified third-party lab using NSF protocols, but formal certification requires ongoing production audits — a distinction worth noting for buyers who require verified certification.

The clear design advantage is mineral retention. Gravity carbon filtration preserves all beneficial calcium and magnesium ions — there is no ion exchange or RO stage to strip them. For households in hard-water regions who want clean water without stripping minerals, this is a meaningful benefit.

The 2.25-gallon lower chamber stores enough filtered water for a typical family's daily drinking needs. No electricity means it works anywhere — including during power outages and for emergency preparedness.

Score Breakdown

6.0
Water Quality Score
Based on manufacturer specs, NSF/ANSI certifications, and independent lab data
💧 Water Cleanliness
6.0
⚗️ Optimal pH
7.5
🌿 Minerals
9.0
Additional Factors
Design
8.0
Maintenance
8.5
Value
8.0
7.5
Overall Score
Water quality weighted 85%, design/maintenance/value 15%

Pros & Cons

✓ What We Like

  • Third-party tested 99.9999% bacteria and 99.99% virus removal
  • Fluoride reduction >97% (Envirotek lab test)
  • Preserves all beneficial minerals — no ion exchange or RO
  • No electricity needed — gravity fed, works anywhere
  • 2.25-gallon capacity in lower chamber
  • NSF/ANSI 61-compliant materials

✗ What Could Be Better

  • Not formally NSF or IAPMO certified (third-party tested to standards only)
  • Manufacturer's 5,000-gallon filter claim is unverified by independent testing
  • Gravity filtration is slower than pressurised systems
  • No PFAS removal data in available test reports

Specifications

typeGravity Stainless Steel Filter
powerNone — gravity fed
height21.5 inches assembled
weight< 8 lbs
flow_rate~1 gal / 15–20 min
lower_chamber2.25 gal / 8.5L
upper_chamber2.25 gal / 8.5L
virus_removal99.99% (Envirotek lab test)
filter_capacity200 gal (independently verified); 5,000 gal (manufacturer claim, unverified)
bacteria_removal99.9999% (Envirotek lab test)
fluoride_removal>97% (third-party tested)
certification_statusThird-party tested to NSF/ANSI 42 & 53 standards (not formally NSF/IAPMO certified)
contaminants_claimed206+

Certifications

Third-party tested to NSF/ANSI 42 & 53 standards (Envirotek Laboratories)Not formally NSF/IAPMO certifiedNSF/ANSI 61-compliant materials
Starting from
From €260
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✓ We earn a commission on this recommendation. All editorial scores are independent. See our disclosure.

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