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CT Disinfection Calculator

Calculate CT value for pathogen inactivation.

Enter the chlorine residual value for this calculation.
mg/L
Length of time in the specified unit.
min
Enter the ph value for this calculation.
Thermal measurement in specified units (°F, °C, or K).
°C

Results

CT Value:
Calculated ct value based on your inputs.
-mg·min/L
Giardia Log Inactivation:
Calculated giardia log inactivation based on your inputs.
-log
Virus Log Inactivation:
Calculated virus log inactivation based on your inputs.
-log
Reference: AWWA/EPA Standards. EPA Surface Water Treatment Rule.