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Drinking Water Requirements for States and Public Water Systems

Drinking Water Maximum Contaminant Level Limits for Beta Particles and Photon Emitters

This table is excerpted from the Radionuclides Small Entity Compliance Guide. The maximum contaminant level (MCL) for beta particles and photon emitters is 4 millirems/year. The table identifies the individual limits associated with specific types of particles corresponding to this MCL.

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