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Contaminant Candidate List (CCL) and Regulatory Determination

Regulatory Determination 1 for Contaminants on the First Drinking Water Contaminant Candidate List

The Safe Drinking Water Act (SDWA), as amended in 1996, directs EPA to publish a list of contaminants (referred to as the Contaminant Candidate List, or CCL) to assist in priority-setting efforts. SDWA also directed the Agency to select five or more contaminants from the current CCL and determine by August 2001 whether or not to regulate these contaminants with a National Primary Drinking Water Regulation (NPDWR). EPA published its protocol and its preliminary determinations in the June 3, 2002 Federal Register to request public comment. The Agency received and reviewed comments from 15 commenters.

On July 18, 2003, the Agency announced its final determination that no regulatory action is appropriate or necessary for the following nine contaminants:
  • Acanthamoeba
  • Aldrin
  • Dieldrin
  • Hexachlorobutadiene
  • Manganese
  • Metribuzin
  • Naphthalene
  • Sodium
  • Sulfate

The Regulatory Determination 1 Schedule
Date Regulatory Determination
November 1999 Stakeholder meeting to provide a program update and to seek input from stakeholders on the regulatory determination process
March - June 2000 Meetings with the National Drinking Water Advisory Council
June 3, 2002 Announcement of Preliminary Regulatory Determinations for Priority Contaminants on the Drinking Water Contaminant Candidate List
June - August 2002 60 day public comment period
July 17, 2002 Stakeholder meeting to discuss EPA's preliminary regulatory determinations
July 2003 Announcement of Regulatory Determinations for Priority Contaminants on the Drinking Water Contaminant Candidate List


July 2003 Regulatory Determinations for Priority Contaminants on the First Contaminant Candidate List

Federal Register Notice


Support Documents for Regulatory Determination 1

Read the support documents: