Rulemaking initiated to make administrative revisions.
Status of Rulemaking
Proposed Rule comment period scheduled for July 2025.
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
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
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