Beta particles and photon emitters
For Beta particles and photon emitters, regulator is US EPA (National Primary Drinking Water Regulations); limit is 4 millirems per year; unit is millirems per year; limit type is MCL (Maximum Contaminant Level), recorded from its source on 2026-08-06.
- Contaminant
- Beta particles and photon emitters verified
- Regulator
- US EPA (National Primary Drinking Water Regulations) our reading
- Limit
- 4 millirems per year verified
- Unit
- millirems per year verified
- Limit type
- MCL (Maximum Contaminant Level) our reading
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
Beta particles and photon emitters | none ---------- zero | 4 millirems per year
— epa.gov, retrieved 2026-08-06
Source
- epa.govhttps://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations