Hexavalent Chromium MCL (SWRCB-DDW-21-003)

    Hexavalent Chromium MCL Announcements and Information

Information and Documentation Pertaining to This Regulatory Proposal

Status of Proposal

This rulemaking is in progress.

Proposed MCL: 10 ppb (0.010 mg/L)

Proposed DLR: 0.1 ppb (0.0001 mg/L)

This MCL includes a compliance schedule based on water system size and requirements to submit compliance plans and operations plans under certain conditions. See the rulemaking documentation below for details.

Inquiries regarding the contents of these regulations may be directed to Bethany Robinson (Bethany.Robinson@waterboards.ca.gov) and Melissa Hall (Melissa.Hall@waterboards.ca.gov).

Rulemaking Documentation

45-Day Comment Period Documentation

Final Documentation

  • TBD

Complete Rulemaking Documentation Files

CEQA Documentation

Peer Review Documents

History of Rulemaking Proceedings

Sections Affected

California Code of Regulations: Title 22 Sections: 64415, 64431, 64432, 64447.2, 64465, and 64481.