Top 10 Worst & Cleanest Salts — Ranked by Heavy Metal Contamination

This list is compiled from independent, third-party laboratory testing by Lead Safe Mama, LLC (tamararubin.com), Mamavation (EPA-certified lab, 23+ salt brands), Ruan Living, Clean Green Toxicant Free, and legal/class action filings. All ppb figures are in parts per billion (ppb) for Lead unless otherwise noted. The proposed children's safety Action Level for Lead in food is 5 ppb per the Baby Food Safety Act of 2021. There is no safe level of Lead exposure.

⚠ TOP 10 WORST SALTS (Highest Contamination)

Ranked by Lead levels from highest to lowest based on available independent test data.

  1. Selina Naturally Fine Ground Celtic Sea Salt — France

    • Lead: 626 ppb (Lead Safe Mama lab test, June 2024) — also reported at 553 ppb in separate testing
    • Arsenic: 140 ppb (cited in class action lawsuit)
    • 626 ppb = 125× the children's Action Level of 5 ppb
    • Subject to a California class action lawsuit for Prop 65 violations
    • Cadmium also detected. Company's own FAQ claims 489 ppb lead average and disputes contamination framing.
    • Sources: Lead Safe Mama Lab Report | ClassAction.org Lawsuit | Tyson & Mendes Legal Analysis

  2. Redmond Real Salt Ancient Sea Salt — Utah, USA (Mined)

    • Lead: 290 ppb (Lead Safe Mama lab test, July 2024); company self-reports average of 200 ppb
    • Arsenic: 91 ppb
    • 290 ppb = 58× the children's Action Level
    • Lead Safe Mama has been documenting Redmond's Lead contamination across their full product line for nearly a decade
    • A separate August 2024 test cited 139 ppb lead — consistent across batches
    • Sources: Lead Safe Mama Lab Report (July 2024) | The Call Of | Redmond's Official Response

  3. A. Vogel Herbamare Original Herbed Sea Salt — Camargue, South France

    • Lead, Cadmium, Mercury, AND Arsenic all detected — tested positive for all four heavy metals
    • One of the few salts tested by Lead Safe Mama to fail on all four toxicants simultaneously
    • Organic certification does not prevent heavy metal contamination
    • Sources: Lead Safe Mama Lab Report (August 2024)

  4. Saltverk Hand Harvested Lava Salt (Black) — Iceland

    • Lead AND Arsenic both detected above Action Levels
    • Black lava salt is activated charcoal-infused — the charcoal component appears to contribute to elevated contamination
    • The white/flaky version from the same brand (Saltverk) has lower contamination (Arsenic only — see #5)
    • Sources: Lead Safe Mama Lab Report (August 2024)

  5. Morton Iodized Salt — USA

    • Lead AND Mercury both detected per Lead Safe Mama testing (published 2025)
    • Tamara Rubin's direct comment: "It tested positive for both Lead and MERCURY – any amount of Mercury is very very bad. I would NOT use that product."
    • Previously considered a "safe" commodity salt by many consumers — this result was a major surprise
    • Mercury in salt is especially alarming given its neurotoxicity and the prevalence of this product in everyday cooking
    • Sources: Lead Safe Mama Salt Chart (2025)

  6. Jacobsen Salt Co. Pure Italian Fine Sea Salt — Trapani, Italy

    • Lead: ~95 ppb detected — above the children's Action Level
    • Important distinction: The Oregon Jacobsen salt tests clean; the Italian version does not
    • Demonstrates that the same brand can have dramatically different results depending on source location
    • Sources: Lead Safe Mama Lab Report (September 2024)

  7. Baja Gold Salt Co. Mineral Sea Salt Fine Grind — Mexico (Sea of Cortez)

    • Lead AND Arsenic detected above Action Levels (Lead Safe Mama, September 2024)
    • A separate source (True Cellular Formulas) cites 338 ppb Lead in a different batch — significant batch variability
    • Note: In Mamavation's EPA-certified lab testing of 23 brands, Baja Gold ranked among the lowest in heavy metals overall — highlighting how results can vary by batch and testing method
    • Sources: Lead Safe Mama Lab Report (September 2024) | True Cellular Formulas

  8. Saltverk Hand Harvested Flaky Sea Salt (White) — Iceland

    • Arsenic detected above the proposed Action Level (Lead Safe Mama, August 2024)
    • Lead was below the Action Level but Arsenic was a concern — making this safer than the black lava version but still not clean
    • Often marketed as premium and "pure" — the testing results challenge that claim
    • Sources: Lead Safe Mama Lab Report (August 2024)

  9. Himalayan Pink Salt (general category — multiple brands)

    • Consistently found to contain elevated Lead and Aluminum across multiple independent tests
    • Lead Safe Mama notes: "All pink salt I've seen tested for aluminum had elevated levels."
    • Mamavation's testing found Himalayan salt among the worst performers alongside Celtic salt
    • While some brands test lower than others, no Himalayan pink salt has yet been confirmed fully clean (non-detect) for Lead by independent lab testing
    • Sources: Lead Safe Mama Salt Overview (2020, updated 2024) | Clean Green Toxicant Free | Green Living Tribe

  10. SaltWorks Pure Ocean Premium Sea Salt — Australia (previously Brazil)

    • Lead: <500 ppb per self-reported testing (company COA, 2019); retail packaging COA dated Jan 2024 shows <40 ppb; bulk packaging COA Jan 2025 shows <10 ppb
    • Wide variation in reported figures across years raises questions about batch consistency and transparency
    • Not yet independently tested by Lead Safe Mama — the above figures come from company-supplied or self-reported certificates of analysis
    • Sources: Lead Safe Mama Salt Overview

✓ CLEANEST SALTS — Non-Detect or Lowest Contamination

These salts have tested "non-detect" for Lead, Cadmium, Mercury, and Arsenic in independent, third-party laboratory testing, OR have consistently returned the lowest measurable levels across multiple testing sources.

  1. ⭐ Jacobsen Salt Co. Pure Kosher Sea Salt — Oregon, USA

  2. ⭐ Diamond Crystal Kosher Salt — Michigan, USA

    • Non-detect for Lead, Cadmium, Mercury, AND Arsenic — confirmed by Lead Safe Mama (2025)
    • A widely available, affordable commodity salt that outperformed premium specialty salts
    • Available at most grocery stores for approximately $6/lb
    • Note: Only the specific product linked has been tested — other Diamond Crystal products have not been independently verified
    • Buy: Amazon affiliate link
    • Sources: Lead Safe Mama Salt Chart (2025)

  3. ⭐ Maldon Sea Salt Flakes — Essex, England

    • Non-detect for Lead, Cadmium, Mercury, AND Arsenic — confirmed by Lead Safe Mama (2025)
    • A classic finishing salt used by professional chefs. Large flake format.
    • Note: An older NIH-cited study (2023) reported 8,400 ppb Lead for Maldon — Lead Safe Mama attributes this likely to contaminated water used in the dissolution process during that test. Their 2025 direct lab result is non-detect.
    • Note: Some Amazon listings carry a California Prop 65 warning for acrylamide (not Lead)
    • Buy: Amazon affiliate link
    • Sources: Lead Safe Mama Lab Report (September 2025) | Lead Safe Mama Salt Chart

  4. David's Kosher Salt — USA

    • Lead: 3.5 ppb — below even the most stringent thresholds; no microplastics detected
    • Arsenic: 10.83 ppb (low but detectable)
    • Tested by Mamavation / Clean Green Toxicant Free — not yet independently tested by Lead Safe Mama
    • Sources: Clean Green Toxicant Free

  5. Selina Naturally Makai Pure Celtic Sea Salt — Hawaii, USA

    • Lead: non-detect (LOD <1 ppb); Mercury: non-detect; Arsenic: non-detect
    • Very trace cadmium and copper detected at low levels
    • Important: This is a completely different product from the company's Fine Ground Celtic (from France) which tested at 626 ppb Lead. The Makai Pure is sourced from Hawaii, not France.
    • Sources: Clean Green Toxicant Free

  6. SALTVERK Flaky Sea Salt (White) — Iceland (lower tier clean)

    • Lead: 6.5 ppb — just above the 5 ppb Action Level for children per Lead Safe Mama testing; very low in broader context
    • Arsenic: 15.27 ppb
    • Ranks well in Mamavation's broader comparison but does not reach non-detect status
    • Sources: Clean Green Toxicant Free | Lead Safe Mama Lab Report

  7. Colima Sea Salt — Mexico

    • Lead: 16.6 ppb; Arsenic: below MRL; Cadmium: 2.29 ppb; Mercury: non-detect; Aluminum: below MRL
    • Ranked by Mamavation as one of the two cleanest among 23 brands tested, alongside Baja Gold — in that specific test set
    • No microplastics detected; company claims microplastic-free harvesting
    • Lead level is above the 5 ppb Action Level for children but very low relative to most tested salts
    • Sources: Mamavation EPA-Certified Lab Testing | Green Living Tribe

Key Takeaways

Key Sources