Revisions to Establish the Sixth Unregulated Contaminant Monitoring Rule (UCMR 6) for Public Water Systems

Activity

Waterkeeper Alliance filed 1 comment on this docket between Aug 26, 2026 and Aug 26, 2026. 24 other organizations filed here. The comment window closed 19d ago.

What Waterkeeper Alliance filed (1)

Abstract

The Safe Drinking Water Act (SDWA), as amended in 1996, requires that the EPA establish a program to monitor up to 30 unregulated contaminants every five years. EPA published the rule defining the fifth cycle of monitoring (UCMR 5) on December 27, 2021 (86 FR 73131). This action meets the SDWA requirement by establishing the terms for the next (sixth) cycle of monitoring and identifying the new unregulated contaminants to be monitored during the five-year UCMR 6 period of 2027-2031. Monitoring preparations are anticipated in 2027, with sample collection between 2028-2030 and reporting concluding in 2031. Related Docket: EPA-HQ-OW-2020-0530

• Waterkeeper AllianceTHIS ORG

  1 filing · confidence 85%
• American Chemistry Counciltrade assoc.

  3 filings · confidence 97%
• Natural Resources Defense Council (NRDC)trade assoc.

  3 filings · confidence 97%
• U.S. Chamber of Commerce

  3 filings · confidence 97%
• Association of Metropolitan Water Agenciestrade assoc.

  2 filings · confidence 97%
• Association of State Drinking Water Administratorstrade assoc.

  2 filings · confidence 85%
• 5 Gyres Institutetrade assoc.

  1 filing · confidence 85%
• AAP Council on Environmental Health & Climate Changetrade assoc.

  1 filing · confidence 85%
• American Water Works Associationtrade assoc.

  1 filing · confidence 97%
• Association of California Water Agenciestrade assoc.

  1 filing · confidence 85%
• Association of Public Health Laboratoriestrade assoc.

  1 filing · confidence 85%
• California-Nevada Section of the American Water Works Associationtrade assoc.

  1 filing · confidence 85%
• Center for Biological Diversity

  1 filing · confidence 97%
• Greater Edwards Aquifer Alliancetrade assoc.

  1 filing · confidence 85%
• Guttmacher Institutetrade assoc.

  1 filing · confidence 85%
• International Bottled Water Associationtrade assoc.

  1 filing · confidence 85%
• LinkMind Foundationtrade assoc.

  1 filing · confidence 85%
• Metropolitan Washington Council of Governmentstrade assoc.

  1 filing · confidence 85%
• National Association of Manufacturers (NAM)trade assoc.

  1 filing · confidence 97%
• PFAS Regulatory Coalitiontrade assoc.

  1 filing · confidence 85%
• Plastics Industry Associationtrade assoc.

  1 filing · confidence 85%
• Southern Environmental Law Center (SELC)

  1 filing · confidence 97%
• The American Water Works Association (AWWA).trade assoc.

  1 filing · confidence 85%
• The Water Quality Associationtrade assoc.

  1 filing · confidence 97%
• United Chemical Technologiesunverified attribution

  1 filing · confidence 70%