Frequent Questions

What is the Long Term 2/Stage 2 Data Collection and Tracking System (LT2/Stage 2 DCTS) and how do I access it?

The LT2/Stage 2 DCTS is a tool designed to help manage data submissions and notifications associated with early implementation activities of the Long Term 2 Enhanced Surface Water Treatment Rule and the Stage 2 Disinfectants and Disinfection Byproduct Rule (DBP). There are two parts of the DCTS ? the LT2 Data Collection System and the LT2/Stage 2 Tracking System. The LT2 Data Collection System collects and tracks the Cryptosporidium, E. Coli, and turbidity data generated during the LT2 monitoring program. The LT2/Stage 2 Tracking System is designed for state and EPA staff to use during the implementation of the LT2 and Stage 2 DBP rules. The DCTS can be accessed through the Central Data Exchange (CDX) at More information, including instructions for registering for the DCTS, is available at
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