40 CFR § 141.543 - How is the disinfection benchmark calculated?
§ 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 |
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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. |