40 CFR 141.543 - How is the disinfection benchmark calculated?
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§ 141.543 How is the disinfection benchmark calculated?
If your system is making a significant change to its disinfection practice, it must calculate a disinfection benchmark using the procedure specified in the following table.
|To calculate a disinfection benchmark your system must perform the following steps|
|Step 1: Using the data your system collected to develop the Disinfection Profile, determine the average
|Step 2: Determine the lowest monthly average value out of the twelve values. This value becomes the disinfection benchmark.|