The statutory provisions and the EPA regulations described in this document are legally binding requirements. This document, however, is not a regulation itself, nor does it change

To use the table: Match the daily minimum temperature and daily maximum pH of your water source with the minimum daily free chlorine residual. Different Giardia CT tables are used

Find the CT Table for the temperature that is equal to (or slightly below) the actual temperature of the water. For example, using Free Chlorine for the inactivation of Giardia Cys

Disinfection profiling and benchmarking are procedures to ensure that microbial inactivation is not significantly reduced due to implementation of the Stage 1 Disinfectant and Disi

CT Tables - Using USEPA Tables - Free download as PDF File (.pdf), Text File (.txt) or read online for free. The document provides instructions for using CT tables to determine chl

*This table applies for systems using combined chlorine where chlorine is added prior to ammonia in the treatment sequence.

Design Disinfection CT Values Should be at Worst Case Conditions EPA provides CT Tables for Log Inactivation by different disinfectants. Log Inactivation depends on dose, temperatu

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CT stands for concentration (C) times contact time (T) and is the concentration of the disinfectant multiplied by the time that the disinfectant is in contact with the water.

This document provides public water systems and States with Environmental Protection Agency’s (EPA’s) current technical and policy recommendations for complying with the disinf