Rulemaking initiated to make administrative revisions.
Status of Rulemaking
Pending rule adopted by the Board on November 13, 2025. Effective on July 1, 2026, unless otherwise specified in the concurrent resolution.
Overview
The proposed rule includes revisions for consistency with final actions taken by EPA under the Clean Water Act and deletes arsenic from the Factors for Calculating Hardness Dependent Metals Criteria Table as the calculations no longer apply for arsenic.
Meeting Details
No events found.
No events found.
Method for Participating and Submitting Comments
Submit all written comments and direct questions to:
Elizabeth Spelsberg
Department of Environmental Quality
1410 N. Hilton St., Boise, ID 83706
Elizabeth.Spelsberg@deq.idaho.gov
Notice of Rulemaking – Proposed Rule | Written Comment Deadline August 1, 2025.
| Comment | Submitted by | Date Received |
|---|---|---|
| NA | NA | NA |
| NA | NA | NA |
| NA | NA | NA |
| NA | NA | NA |
| NA | NA | NA |
| NA | NA | NA |
| NA | NA | NA |
| NA | NA | NA |
| NA | NA | NA |
| NA | NA | NA |
| NA | NA | NA |
| NA | NA | NA |
| NA | NA | NA |
Information pending.
Board of Environmental Quality Meeting
November 13, 2025 | 9 a.m. MT
- Notice of Rulemaking – Adoption of Pending Rule
Notice of Rulemaking – Proposed Rule | Written Comment Deadline August 1, 2025.
Information pending.
No information available at this time.
No information available at this time.