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PFAS DDW General Orders

PFAS General Order DW-2025-00XX-DDW for Initial Monitoring

DRAFT PFAS General Order Initial Monitoring Available for Public Comment:

The Division of Drinking Water proposes to issue an order requiring community and nontransient-noncommunity water systems to conduct initial monitoring for per- and polyfluoroalkyl substances (PFAS). The Division Deputy Director will consider written comments received by 12:00 p.m. (noon) on December 4, 2025, prior to issuing the final Order later this year.

• Notice of Opportunity for Public Comment
• PFAS General Order DW 2025-00XX-DDW
• Exhibit A - List of Sources and Required Monitoring Frequency
  • Exhibit A Supplement
• Exhibit B - Consumer Confidence Report Language, CCRDLs, and Notification and Response Levels

Comments may be submitted electronically via email to commentletters@waterboards.ca.gov. Please indicate in the subject line: "Comment - 2025 Order for Initial PFAS Monitoring."

PFAS General Order DW-2024-0002-DDW

PFAS General Order Signed March 4, 2024:

• PFAS General Order DW 2024-0002-DDW
• Cover Letter to Public Water Systems
• Exhibit A – List of Sources Subject to General Order DW 2024-0002-DDW
• Exhibit B – Consumer Confidence Report Detection Limits and Advisory Levels

PFAS General Order DW-2022-0001-DDW

PFAS General Order Signed October 31, 2022:

• PFAS General Order DW 2022-0001-DDW
• Cover Letter to Public Water Systems
• Exhibit A – List of Sources Subject to General Order DW 2022-0001-DDW
• Exhibit B – Consumer Confidence Report Detection Limits and Advisory Levels

PFAS General Order DW-2021-0001-DDW — Rescinded October 31, 2022

PFAS General Order Signed February 16, 2021:

• PFAS General Order DW-0001-DDW
• Cover Letter to Public Water Systems
• Exhibit A-DDW Sections 1-5:
  • Section 1
  • Section 2
  • Section 3
  • Section 4
  • Section 5
• Exhibit B
• Exhibit C

PFAS General Order DW 2020-003-DDW — Rescinded October 31, 2022

PFAS General Order Signed August 27, 2020:

• PFAS General Order
• Cover Letter to Public Water Systems

Exhibits:

• Exhibit A-DDW Sections 1-5
  • Note:  the format of this file differs from that attached to the General Order to accommodate web posting and accessibility
• Exhibit B
• Exhibit C