Chapter 391-3-6 Rules for Water Quality Control

August 2025 Proposed Amendments to Rules for Water Quality Control, Chapter 391-3-6

Notice of Proposed Amendments to Rules for Water Quality Control, Chapter 391-3-6  (PDF, 126.75 KB)

Synopsis of Proposed Amendments to Rules for Water Quality Control, Chapter 391-3-6 and Statement of Rationale  (PDF, 150.19 KB)

Proposed Amendments to Rules for Rules for Water Quality Control, Chapter 391-3-6  (PDF, 615.94 KB)

February 2023 Proposed Amendments to Rules for Water Quality Control, Chapter 391-3-6

Notice of Proposed Amendments to Rules for Water Quality Control, Chapter 391-3-6  (PDF, 114.7 KB)

Synopsis of Proposed Amendments to Rules for Water Quality Control, Chapter 391-3-6 and Statement of Rationale  (PDF, 106.01 KB)

Proposed Amendments to Rules for Rules for Water Quality Control, Chapter 391-3-6  (PDF, 235.18 KB)

January 2022 Proposed Amendments to Rules for Water Quality Control, Chapter 391-3-6

Notice of Proposed Amendments to Rules for Water Quality Control, Chapter 391-3-6  (PDF, 109.17 KB)

Synopsis of Proposed Amendments to Rules for Water Quality Control, Chapter 391-3-6 and Statement of Rationale  (PDF, 79.72 KB)

Proposed Amendments to Rules for Rules for Water Quality Control, Chapter 391-3-6  (PDF, 268.94 KB)

Supporting technical documents for various items in the proposed rule amendments can be found here.