Systems may qualify for reduced monitoring if their LRAAs at all monitoring locations for TTHMs and HAA5 are no more than 0.040 mg/L and 0.030 mg/L, respectively. In addition, systems that are required to monitor for TOC must maintain annual average TOC levels of 4.0 mg/L or less in source water at each treatment plant in order to qualify.
Systems may remain on reduced monitoring as long as their quarterly LRAAs for TTHMs and HAA5 remain no more than 0.040 mg/L and 0.030 mg/L, respectively (for systems with quarterly reduced monitoring) or their TTHM and HAA5 samples are no higher than 0.060 mg/L and 0.045 mg/L, respectively (for systems with annual or less frequent monitoring).
If monitoring results indicate that a system is no longer eligible for reduced monitoring, the system must resume routine monitoring or begin increased monitoring the quarter immediately following the monitoring period in which the system exceeded the specified levels for reduced monitoring.
If your system qualifies for reduced monitoring, KDHE will notify you via mail.