StacksVerified U.S. regulatory reference

40 CFR §141.542

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
If your system is considering a significant change to its disinfection practice, your system must calculate a disinfection benchmark(s) as described in §§ 141.543 and 141.544 and provide the benchmark(s) to your State. Your system may only make a significant disinfection practice change after consulting with the State for approval. Your system must submit the following information to the State as part of the consultation and approval process:
  1. (a)A description of the proposed change;
  2. (b)The disinfection profile for Giardia lamblia (and, if necessary, viruses) and disinfection benchmark;
  3. (c)An analysis of how the proposed change will affect the current levels of disinfection; and
  4. (d)Any additional information requested by the State.