Consideration of Other Regulatory Revisions in Support of the Second Six-Year Review of the National Primary Drinking Water Regulations

摘要

In addition to the review of the maximum contaminant level goals (MCLGs), maximum contaminant levels (MCLs), and treatment techniques (TTs) components of the NPDWRs, EPA considers whether other regulatory revisions might be needed, such as system monitoring and reporting requirements, as part of Six-Year Review process. For the Six-Year Review 2, EPA utilized the protocol established during Six-Year Review 1 for evaluating which implementation issues to consider (USEPA, 2003b). EPAs protocol focused on items that were not already being addressed, or had not been addressed, through alternative mechanisms (e.g., as a part of a recent or ongoing rulemaking).