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Functional Water

Still spring waters and a plain sparkling option, with independent evidence and exact product scope shown.

Explore every approved product in this category, including the reviewed choices across our brand ranges.

3 approved products

How to choose ↓

Ingredient approval and testing are separate. Read the evidence note for the exact product you choose.

Functional Water

Flow Original Mineral Spring Water, 1 L carton

Plain Canadian spring water in cartons, with an original historical NSF laboratory report.

✓ Ingredients Approved✓ Testing provided · historical 2022 water panel

1 approved product from Flow

Buy it now: Flow Original Mineral Spring Water, 1 L carton at the official seller (opens in a new tab)
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Testing & scope

Report over 12 months old · historical sample evidence. Age checked 23 Oct 2026.

Label And Batch review sealTesting provided · historical 2022 water panel
Report date: 04 Mar 2022

Original independent laboratory report — historical sample

Evidence issuer: NSF International

Open the evidence source

Evidence reviewed for: historical NSF water-quality report.

Exact product: Flow Original, plain Canadian natural mineral spring water, 1 L carton / 12-pack. Historical 2022 Canadian bottled-product sample only; flavours and sparkling are separate.

Read the full evidence

Functional Water

Icelandic Glacial Plain Sparkling Spring Water, 330 ml glass

Plain sparkling spring water in glass, with its own current NSF product listing.

✓ Ingredients Approved✓ Certification · NSF bottled-water standard

2 approved products from Icelandic Glacial

Choose your product · 2 products
Testing & scope
Label And Batch review sealCertification · NSF bottled-water standard
Independent certification

Current independent product certification

Evidence issuer: NSF International

Open the evidence source

Evidence reviewed for: NSF bottled-water product certification.

Exact product: Plain Natural Spring Water Sparkling, 330 ml glass bottle / 24-pack. NSF listing for the sparkling product type at the Olfus facility; no flavour extensions.

Read the full evidence

Functional Water

Icelandic Glacial Natural Spring Water, 500 ml

Plain spring water with an NSF product listing and an original bottled-water laboratory report.

✓ Ingredients Approved✓ Testing provided · bottled-water panel

2 approved products from Icelandic Glacial

Choose your product · 2 products
Testing & scope

Report over 12 months old · historical sample evidence. Age checked 23 Oct 2026.

Label And Batch review sealTesting provided · bottled-water panel
Report date: 20 Feb 2025

Original independent report plus exact current product certification

Evidence issuer: NSF International

Open the evidence source

Evidence reviewed for: 2025 bottled-product sample PRD-15JAN25 13:29 / BBF15JAN2027. Still Natural Spring Water; original report does not specify bottle size. Keep 2026 source-water evidence separate. Named methods include metals, microbiology, chemicals and radiological tests; individual limits preserved. Some subcontracted methods outside NSF ISO scope.

Read the full evidence

A little guidance

How to choose

Choose still or sparkling by taste and format. Natural alkalinity, carbonation, hydrogen enrichment and oxygen enrichment are different characteristics. Check destination-specific stock and delivery.

What we look for

A complete disclosed water and mineral formula, without unreviewed flavors or sweeteners.

Testing and evidence

Testing provided means we reviewed matching independent laboratory evidence or an independently verifiable product certification. Open each product’s evidence for the actual tests, dates and sample limits. Results do not cover every retail pack or every possible hazard.

Does ingredient approval confirm a hydrogen concentration?

No. We show testing as not verified until the required product-specific evidence has been reviewed. We do not adopt a numerical concentration or therapeutic claim from marketing alone.