1. (a) For a community water system, the MCLs and MCLGs for radionuclide contaminants shall be as stated in Table 703-1, below:

   Table 703-1: MCLs and MCLGs for Radionuclide Contaminants

   Radionuclide Contaminant

   MCL

   MCLG

   Compliance Gross Alpha

   15 pCi/L

   0 pCi/L

   Radium 226 + 228

   5 pCi/L

   0 pCi/L

   Uranium

   30 μg/L

   0 μg/L

   Beta Particle and Photon Radioactivity

   4 mrem/year

   0 mrem/year

2. (b) Compliance with radionuclide contaminant MCLs shall be:

   1. (1) Calculated as specified in Env-Dw 710; and
   2. (2) Based on the monitoring as specified in Env-Dw 707, Env-Dw 708, and Env-Dw 710.
3. (c) The combined radium-226 and radium-228 value shall be determined by the addition of the results of the analysis for radium-226 and the analysis for radium-228, provided both analyses are performed on samples collected on the same day.

Source. #9699, eff 5-1-10; ss by #12665, eff 1-1-19; ss by #12819, eff 6-28-19