Drinking Water Final-Form Regulation: Disinfection Requirements Rule (DRR)

The Disinfection Requirements Rule has been published in the Pennsylvania Bulletin.  This is a final –form regulation and is effective upon publication in the PA Bulletin which was Saturday, April 28, 2018.   

Other effective dates were adopted based on comments from the DEP advisory committee (the TAC Board) and public.  These deferred implementation dates are as follows:

  • The amended monitoring, reporting and treatment technique requirements for the disinfectant residual in the distribution system are required 1 year after the effective date to allow additional time for operational changes and to effectively increase disinfectant residuals to 0.2 milligram per liter (mg/L) throughout the distribution system. If additional time is needed for capital improvements or to complete more substantial operational changes, a system-specific compliance schedule may be requested.

  • The submission of a sample siting plan is required 6 months after the effective date to allow time for development of the plan.

  • The development of a nitrification control plan is required 1 year after the effective date.