IMPORTANT INFORMATION ABOUT YOUR DRINKING WATERMalmstrom Air Force BasePublic Water Supply MT0000515Haloacetic Acids (HAA5) MCL1st Quarter 2019NOTICE OF STANDARD MAXIMUM CONTAMINANT LEVEL (MCL) VIOLATIONMalmstrom Air Force Base’s water system exceeded the maximum contaminant level (MCL) for Haloacetic Acids (HAA5). This is not an emergency. As our