Radioactive Contaminants Contaminant (units) MCL MCLG Level Found Range Sample Date (if prior to 2023) Violation Typical Source of Contaminant Gross Alpha, Excl. R 15 0 0.4 0.4 9/22/ 2020 No Erosion of natural deposits & U (pCi/l Radioactive Contaminants Contaminant (units) MCL MCLG Level Found Range Sample Date (if prior to 2023) Violation Typical Source of Contaminant Gross Alpha, Excl. R 15 0 0.4 0.4 9/22/ 2020 No Erosion of natural deposits & U (pCi/l