When a PWS exceedes the maximum contaminant level (MCL) for both Total Trihalomethanes (TTHM) and Haloacetic Acids (HAA5) it must issue a public notice to inform the consumers of its water that the levels of Total Trihalomethanes and Haloacetic Acids detected in their water have exceeded the MCLs set by Federal Regulations. You can use this template as a guide to prepare that public notice.

• Public Notification - Total Trihalomethanes (TTHM) and Haloacetic Acids (HAA5) MCL Template (PDF)(2 pp, 22 K)