Re:    VA5143114 - Chatham, Town of

           DBPs Sample Results 2nd Qtr. 2024


Attached is a review the results of total trihalomethane (TTHM) and haloacetic acid (HAA5) analyses that were performed on water samples collected during the second quarter (April - June) 2024.  The summary compliance chart for each sampling location is provided below.   


The TTHM maximum contaminant level is 0.080 mg/L and the HAA5 maximum contaminant level is 0.060 mg/L.  Compliance with the TTHM and HAA5 maximum contaminant levels is based on the four-quarter locational running annual average(s) (LRAA).  The operational evaluation level (OEL) is also calculated on a quarterly basis and compared to the maximum contaminant levels as an early warning sign. 


Based on the results, the waterworks is in compliance with the TTHM and HAA5 maximum contaminant levels. 

In addition the waterworks has not exceeded a TTHM or HAA5 operational evaluation level. 


Thus, continue routine quarterly TTHM / HAA5 sampling, with your next set due within July 2024.


If you have any questions, please feel free to contact the Danville Field Office. 

Additional sampling information and schedules may be found at Home - Drinking Water Viewer (   



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