Overview
This page is HMTc Category 5 row 15 from the locked beverage architecture. It exists as a wiki node so evidence, regulatory context, ingredient routing, and future field findings have a stable place to land.
Reading guide
Legal, regulatory and retailer teams can use the cited measurements, applicable limits and study limitations to assess the evidence for this category.
Quality teams can examine product form, measurement basis and sources of variation. Journalists and researchers can follow each reference to the original findings and methods.
Related tools and pages: Kombucha Tea Based · Lab Result Comparator
Evidence summary
The table below summarizes what the peer-reviewed and government literature cited on this page reports for heavy-metal concentrations in Fermented beverages, non-tea-based. Values are pulled directly from cited sources without re-aggregation. This page publishes literature evidence only, not certification thresholds.
Methodology rules for speciation, basis preservation, non-detect handling, and source pooling are stated in the Methodology section above and apply to every row below.
| Analyte | Subcategory | Reported concentration range | Detection rate | Applicable regulatory cap | Sources | Confidence | Basis |
|---|---|---|---|---|---|---|---|
| lead (Pb) | Fermented beverages, non-tea-based (no contributing evidence loaded) | No concentration data loaded for this analyte | Sample-level detection rate not reported | No applicable cap loaded | 0 | data gap | Basis not reported |
| cadmium (Cd) | Fermented beverages, non-tea-based (no contributing evidence loaded) | No concentration data loaded for this analyte | Sample-level detection rate not reported | No applicable cap loaded | 0 | data gap | Basis not reported |
Source Evidence Inventory
The table below records what the contributing source actually measures. The source is a food-contact-material (FCM) contamination event report involving kombucha (tea-based substrate); it routes to this row because the FCM pathway documented applies equally to non-tea acidic fermented beverages. This source establishes the FCM risk vector for the category; it is not an ingredient-level occurrence study for non-tea fermented beverages.
| Metal | Subcategory | n | Statistic | Value | Units | Notes | Row-fit | Basis | Source |
|---|---|---|---|---|---|---|---|---|---|
| lead (Pb) | Fermented beverage (tea-based kombucha), ceramic vessel, 14-day | 1 | Point | 0.95 | mg/kg | FCM pathway; acidic fermentation dissolves lead from ceramic glaze; routes to this row because FCM pathway is substrate-independent | partial — FCM event (tea-based substrate); FCM pathway applies to non-tea substrates equally | wet weight, as consumed | 1 |
| lead (Pb) | Fermented beverage (tea-based kombucha), ceramic vessel, 19-day | 1 | Point | 7.1 | mg/kg | Same vessel, extended time | partial — FCM event | wet weight, as consumed | 1 |
| lead (Pb) | Packaged ready-to-sell product | 1 | Point | 47 | mg/kg | Packaged in ceramic commercial container at point of sale | partial — FCM event | wet weight, as consumed | 1 |
Evidence note: The FCM pathway documented by munilla-garcia2023 (ceramic container leaching under acidic conditions) is substrate-independent: any acidic fermented beverage — water kefir, fruit kvass, lacto-fermented beverages — would experience the same leaching dynamic from improperly glazed ceramics. The source routes to this row on that basis. Ingredient-level lead (Pb) and cadmium (Cd) occurrence data for non-tea fermented beverages is absent from the current evidence base; the row’s EF-5 designation reflects this gap. See Kombucha (Tea-Based) for the parallel discussion.
Supporting evidence and scope
The sources below are catalogued as context candidates for this row. The source scope column states what the authors reported; matrix-axis and format-axis row-fit classify how cleanly the scope maps to this row.
| Source | Title | Source scope | Metals | Author-scope row-fit | Canonical appearance |
|---|---|---|---|---|---|
| 1 | Family outbreak of lead poisoning associated with the consumption of kombucha manufactured and marketed in ceramic containers | kombucha (tea-based, ceramic containers, Spain); routes to both kombucha-tea-based and this row | Pb | Matrix axis: partial (tea-based substrate; FCM pathway applies to this row’s non-tea substrates equally). Format axis: finished beverage as consumed. Row-fit: partial — FCM event, not ingredient-level occurrence. | Direct evidence (Source Evidence Inventory above) |
Federal / Regulatory Limits vs Field Findings
This is the fast comparison view for standards developers, regulators, retailers, brands, and legal teams. It shows the applicable federal or regulatory limit next to the current field-evidence state. It is not an HMTc pass/fail table; technical distributions remain in the evidence sections below.
| Metal | Federal / regulatory limit | Actual field finding | Decision read | Evidence |
|---|---|---|---|---|
| No loaded row | No federal or product-specific regulatory limit loaded yet | Comparable field finding extraction pending | Evidence-gap tracking only; do not infer a pass/fail status | Regulatory Crosswalk vs Field Findings |
Controls and mitigation
Non-tea fermented beverages share the food-contact-material leaching pathway with tea-based kombucha; without the tea substrate, aluminum accumulation from Camellia sinensis is eliminated, leaving Pb and Cd from the fruit, grain, or vegetable substrate plus FCM leaching as the primary metal pathways.
| # | Category | Specific lever | Magnitude | Source |
|---|---|---|---|---|
| 1 | Container/vessel materials | Do not use ceramic, lead-containing solder, or non-food-grade metal containers for fermentation or storage. Use food-grade stainless steel (304 or 316), food-grade HDPE, or borosilicate glass vessels with certified lead-free closures. | The Ibiza kombucha outbreak (munilla-garcia2023) demonstrates Pb escalation to 47 mg/kg in ceramic vessels over 14–19 days under acidic conditions; the same chemistry applies to any acidic fermented beverage. Compliant containers eliminate this pathway. | 1 |
| 2 | Base substrate sourcing | Pb and Cd in the finished beverage reflect concentrations in the fruit, grain, or vegetable substrate. Source from documented low-Pb, low-Cd growing regions; apple and grape substrates carry additional iAs concern from legacy arsenical pesticide use in orchards. | Magnitude not quantified for non-tea fermented beverages specifically in the current evidence base. See ingredient pages for the contributing substrate (e.g., Apple, Grapes) for source-level concentration data. | — |
| 3 | pH and fermentation management | Lower final pH increases the driving force for metal leaching from any contacted surface. This lever is residual after compliant container selection. | Demonstrated for the FCM pathway: for compliant containers, pH management has minimal impact; for artisanal or non-certified vessels, shorter fermentation times and higher pH reduce leaching. | 1 |
| 4 | Testing and QC | Lot-level ICP-MS on finished beverage; Pb and Cd are the priority analytes for this row. Test the beverage in its final packaging at an appropriate post-fermentation point. | Testing identifies out-of-specification lots before consumer delivery; magnitude depends on specification tightness. | — |
| 5 | Supplier verification | For brands sourcing from artisanal or co-manufacturing producers, require food-contact-material certification for all fermentation and packaging vessels. | Regulatory requirement under EU and national FCM rules; non-compliance was the root cause in the only documented Pb event for this product-category family. | 1 |
Decision Snapshot
| Field | Status |
|---|---|
| Row state | Locked row node; structured occurrence extraction pending |
| Category hub | Category 5: Beverages |
| Crosswalk hub | Regulatory Crosswalk vs Field Findings |
| HMTc use | Routing and evidence-gap tracking only; not a certification threshold |
Evidence Handling
Finished-product findings belong on this product page. The current contributing source documents a food-contact-material contamination pathway, not an ingredient-level occurrence survey. Findings from this source are included to document the FCM risk vector for this product row; they do not characterize the baseline Pb distribution in this category when produced in compliant containers.
How standards math uses this page
This page reports what the peer-reviewed and government literature says about heavy-metal concentrations in this product category; it publishes no certification thresholds of its own. Certification criteria are set separately under the Heavy Metal Tested & Certified program at heavymetalcertified.com, which reads this page as its literature baseline. The two are kept apart by design, so this page remains an independent record of the evidence rather than a justification for any threshold.
Historical recalls and enforcement
No formal product recalls for non-tea fermented beverages on heavy-metal grounds are documented in the current evidence base. The 2023 Ibiza family outbreak (munilla-garcia2023) involved tea-based kombucha from ceramic containers and is documented on the Kombucha (Tea-Based) page; the FCM mechanism it describes applies to this category equally. No EU or Spanish maximum level for Pb in fermented beverages existed at the time of that outbreak; the regulatory gap identified by the authors covers this category as well as kombucha. Events are framed as regulatory events, not brand rankings.
Measurements filed from the retired ingredient page
These sources were cited on the ingredient record before that record was retired.
- General Standard for Contaminants and Toxins in Food and Feed (CXS 193-1995)
- Family outbreak of lead poisoning associated with the consumption of kombucha manufactured and marketed in ceramic containers
Methodology
This page reports what the cited sources say about heavy-metal concentrations in non-tea-based fermented beverages. This category covers water kefir, fruit kvass, jun (when made without Camellia sinensis), fermented fruit and vegetable juices, and similar acidic fermented drinks whose substrate is not tea. The clean_benchmark designation relative to kombucha-tea-based reflects the absence of the tea-plant aluminum accumulation pathway; however, the food-contact-material (FCM) leaching pathway under acidic conditions is identical between the two rows.
Food-contact-material events vs. ingredient-level occurrence. The current contributing source documents lead leaching from improperly glazed ceramic containers; this source routes to both this row and the kombucha-tea-based row because the FCM pathway is identical regardless of whether the substrate is tea-based or not. The FCM-event data cannot substitute for ingredient-level occurrence data in standards-setting.
Speciation is treated as non-substitutable. total arsenic (tAs) and inorganic arsenic (iAs) are never conflated. Total chromium (Cr) is not treated as hexavalent chromium (Cr-VI).
Basis is preserved and labeled. Concentrations in the finished beverage are reported as wet weight, as consumed, unless otherwise stated.
Evidence tiers and confidence. A-tier source. Confidence: very low — n=5 samples, single FCM outbreak event, single geography.
References
Works cited in this page’s text, in first-appearance order. See Sources for this page’s source inventory. Each title links to a source record with bibliographic details, reported findings, and document provenance.
- General Standard for Contaminants and Toxins in Food and Feed (CXS 193-1995)Government
- Family outbreak of lead poisoning associated with the consumption of kombucha manufactured and marketed in ceramic containersPeer-reviewed
Sources
Source records associated with this topic. Inclusion does not establish that every finding applies to this product or ingredient. References above identify works cited in the text.
| # | Citation | Year | Type | Used on this page for |
|---|---|---|---|---|
| 1 | Assuncao et al. 2026. Are fermented foods safe for human health? A systematic analysis of the literature, Frontiers in Nutrition | 2026 | Peer-reviewed | Contribution to this topic remains under review; see the source record for its reported scope. |
| 2 | Bhattacharya et al. 2024. Metal Contents in Traditional Alcoholic Rice Beers Prepared by Rabha and Sonowal Kachari Tribes of Assam, India, Asian Journal of Chemistry | 2024 | Peer-reviewed | IN Cd, Pb, Cr, Ni, Co, Cu, Fe, Mn, Zn occurrence in Four traditional alcoholic rice beers: sticky-rice beer of Pati Rabhas (Baksa and Bongaigaon districts), sticky-rice beer of Koch… (n=4) |
| 3 | Munilla et al. 2023. Family outbreak of lead poisoning associated with the consumption of kombucha manufactured and marketed in ceramic containers, Revista Española de Salud Pública | 2023 | Peer-reviewed | FCM pathway: Pb leaching from ceramic containers under acidic fermentation conditions; documented for tea-based substrate but mechanism applies equally to non-tea acidic fermented beverages; regulatory gap (no EU ML for Pb in fermented beverages) |
| 4 | Ciont et al. 2022. Beer Safety: New Challenges and Future Trends within Craft and Large-Scale Production, Foods | 2022 | Peer-reviewed | GLOBAL/ET Pb, Cd, Al, Sn, Cu, Mn, Zn occurrence in Narrative review; no new samples were measured. The Data Availability Statement on page 16 states: ‘No new data… |
| 5 | Đurđić et al. 2021. Is a Lead Isotope Ratios in Wine Good Marker for Origin Assessment?, Frontiers in Chemistry | 2021 | Peer-reviewed | RS Pb occurrence in Fifty-nine red wine samples from four Serbian regions — Vojvodina (n=12), Belgrade (n=22), Central Serbia (n=14) and South… (n=59) |
| 6 | Wang et al. 2020. Contamination and health risk assessment of lead, arsenic, cadmium, and aluminum from a total diet study of Jilin Province, China, Food Science & Nutrition | 2020 | Peer-reviewed | CN Pb, tAs, Cd, Al occurrence in Jilin Province total-diet-study composites across 12 food groups and 48 product groups, with consumption inputs for 7700 residents… |
| 7 | Izah et al. 2016. A Review of Heavy Metal Concentration and Potential Health Implications of Beverages Consumed in Nigeria, Toxics | 2016 | Peer-reviewed | NG/GLOBAL Pb, Cd, tAs, tHg, Cr, Ni, Sn, Sb, Cu, Mn, Zn occurrence in Narrative review of secondary data from Nigerian beverage studies published 2007-2016. No new measurements. Section 2 states the… |
| 8 | F-D et al. 2015. Vertical distribution and analysis of micro-, macroelements and heavy metals in the system soil-grapevine-wine in vineyard from North-West Romania, Chemistry Central Journal | 2015 | Peer-reviewed | RO Pb, Cd, Cu, Zn, Ni, Co occurrence in Three Vitis vinifera cultivars (Feteasca albă, Feteasca regală, Riesling italian) grown in one 4-ha vineyard at Turulung (Satu… (n=3) |
| 9 | Health Canada Bureau of 2008. ARCHIVED — Health Canada Requests Information from Industry on the Use of Aluminum-Containing Food Additives, Health Canada, Food Directorate, Bureau of Chemical Safety | 2008 | Regulation | Contribution to this topic remains under review; see the source record for its reported scope. |
| 10 | Reczajska et al. 2005. Determination of Chromium Content of Food and Beverages of Plant Origin, Polish Journal of Food and Nutrition Sciences | 2005 | Peer-reviewed | PL Cr occurrence in Fresh fruits, vegetables, and wheat grains collected in 2001 from commercial plantations in three Polish provinces (Mazowieckie, Lubelskie,… (n=272) |
Update history
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