Why we chose it
A still-water alternative with naturally occurring minerals. The original laboratory report and its age are visible rather than replaced with broad purity claims.
Ingredients
Natural mineral spring water only, with naturally occurring minerals; no added flavours, sweeteners, citric acid or citrate salts declared.
Read the current labelWhat the evidence shows
Report over 12 months old · historical sample evidence. Age checked 23 Oct 2026.
Report date: 04 Mar 2022
L&B evidence review: 2026-10-20. This review date does not refresh the underlying test or report.
Original independent laboratory report — historical sample
Original NSF report hosted by the brand on Shopify CDN. Issuer: NSF International.
Flow links its Canadian water-quality report from its current sustainability page. Original NSF report A-00427913, authorised 4 March 2022, concerns Flow Water Inc. Canadian Spring Water. The report includes physical quality, microbiology, inorganic and organic chemicals and radiological testing. Reported pH is 7.75; coliform and E. coli are absent in the named sample. Lead and arsenic are below their stated reporting limits. The original report states PASS against its named USFDA criteria.
Evidence limits
Historical March 2022 sample report, not a current-lot certificate or proof that the 2026 pack was tested. The report does not identify the retail carton size. It prints sample/receipt dates in an inconsistent order and a lot string 2024-01-20; those identifiers are preserved rather than reinterpreted. NSF explicitly says this report does not constitute product certification. Some methods have accreditation or state-certification exclusions. No present-day NSF certification, PFAS-free, all-contaminant absence, zero-metals, health superiority or current batch claim.
The exact scope
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.
What we watch
New Canadian bottled-product report, manufacturing/source changes, exact plain formula and US availability.
Sources & review context
Brand product informationEvidence or ingredient sourceOriginal NSF Canadian spring-water report — March 2022Current brand link to its Canadian reportExact plain 1 L US-store product and ingredient labelEvidence record date: 2026-10-20. Copy edited: 2026-10-20. These dates do not refresh the date of a laboratory report.
We review published or supplied evidence. Unless stated otherwise, we did not collect the sample or perform the laboratory analysis.