Baby Safety / Compounds / Tritium (³H)

Is Tritium (³H) safe for babies and kids?

Moderate risk for kids

Infants are more vulnerable to Tritium (³H) than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

What is tritium (³h)?

Also known as: TRITIUM, Triterium, ditritium, Hydrogen-3.

CAS number
10028-17-8
Molecular formula
H2
Molecular weight
6.032098563 g/mol
SMILES
[HH]
PubChem CID
24824

Risk for babies

Moderate risk

Infants are more vulnerable to Tritium (³H) than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

Neonates and infants up to 12 months have incomplete blood-brain barrier development, immature Phase I/II metabolic enzymes (particularly CYP3A4, UGT1A1), and higher gastrointestinal permeability. Equivalent doses produce higher internal concentrations and longer residence times.

What to do: Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

Risk for pregnant and nursing people

High risk

Pregnancy alters the metabolism and distribution of Tritium (³H), potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.

Known reproductive toxicant (GHS H360) or confirmed endocrine disruptor. Placental transfer is presumed. Fetal exposure during critical developmental windows may cause structural malformations, growth restriction, or functional deficits.

What to do: Minimize exposure during pregnancy and lactation. Consult healthcare provider regarding specific risks. Consider alternative products with lower hazard profiles.

Regulatory consensus

3 regulatory and scientific bodies have classified Tritium (³H). The classifications differ — that's the data.

AgencyYearClassificationNotes
NRC—Drinking water standard: 20,000 pCi/LMaximum contaminant level for tritium in drinking water
WHO—Drinking water guidanceReference level used for comparison; Fukushima discharged water at ~1,500 Bq/L, 7× below this guidance
IAEA—Regulatory concurrence on tritium safetyConcurred that Fukushima treated water discharge concentrations posed negligible risk

Regulators apply different standards of evidence — animal-data weighting, exposure-pattern assumptions, epidemiological power thresholds — which is why two scientific bodies can review the same data and reach different conclusions. The disagreement is the data.

Where kids encounter tritium (³h)

  • Industrial Facilities — Manufacturing plants, Chemical storage areas, Waste treatment sites
  • Occupational Environments — Factories, Warehouses, Transportation vehicles

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Tritium (³H):

  • Shielding / distance / time (radiation protection)
    Trade-offs: Removes 95-99% of dissolved contaminants including metals, PFAS, nitrates; wastes 2-4 gallons per gallon produced (improving with newer systems); removes beneficial minerals; $0.05-0.25/gallon; requires pre-treatment for longevity.
    Relative cost: 1.2-2×

Frequently asked questions

Is tritium (³h) safe for kids?

Infants are more vulnerable to Tritium (³H) than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

What products contain tritium (³h)?

Tritium (³H) appears in: Manufacturing plants (Industrial facilities); Chemical storage areas (Industrial facilities); Factories (Occupational environments); Warehouses (Occupational environments).

What should I do if my child is exposed to tritium (³h)?

Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

Why do regulators disagree about tritium (³h)?

Tritium (³H) has been classified by 3 agencies including NRC, WHO, IAEA, with differing conclusions. Regulators apply different standards of evidence (animal data weighting, exposure-pattern assumptions, epidemiological power thresholds), which is why two scientific bodies can review the same data and reach different conclusions. See the regulatory consensus table on this page for the full picture.

See Tritium (³H) in the baby app

Look up products containing tritium (³h), compare to alternatives, and explore the full data record.

Open in baby View raw API data

Sources (2)
  1. US NRC: Tritium Fact Sheet — 12.32-Year Half-Life, Very Low Energy Beta (Max 18.6 keV), HTO Body Water Distribution and 10-Day Biological Half-Life, 20,000 pCi/L Drinking Water Standard, Nuclear Plant Monitoring Programs (2020) (2020) — regulatory
  2. IAEA: Fukushima Daiichi ALPS-Treated Water — Tritium Concentration 1,500 Bq/L (7× Below WHO Guidance), Dose Assessment 0.003 mSv/yr Maximum Individual Dose, Marine Environment Impact, and Regulatory Compliance Verification (2023) (2023) — regulatory

Reference data, not professional advice. Aggregates publicly available regulatory and scientific data; not a substitute for veterinary, medical, legal, or regulatory advice. Why we built ALETHEIA →