Indiana Administrative Code Title 320 - INDIANA ENVIRONMENTAL MANAGEMENT BOARD
The Indiana Administrative Code, Title 320 – Indiana Environmental Management Board (320 IAC) sets out Indiana’s regulations on environmental protection and waste management. It is structured into multiple articles covering different areas—all under the oversight of the Environmental Management Board:
📘 Overview of Title 320 – Key Articles
Article 1 – Permit Requirements
Originally under the Environmental Management Board, now transferred to the Indiana State Board of Health. (iar.iga.in.gov)
Article 2 – Environmental Policy: State Agencies
Also transferred (agency-level policies). (casetext.com)
Article 3 – Water Sanitation (Rules 320 IAC 3‑1 through 3‑10.1)
Contains rules defining water quality standards and sanitation protocols. (law.cornell.edu)
Articles 4 & 4.1 – Hazardous Waste Management
Article 4 was repealed but succeeded by Article 4.1, detailing hazardous waste permits and related requirements (Rules 4.1‑1 through 4.1‑56). (law.cornell.edu)
Article 5 – Solid Waste Management and Industrial Waste Hauler Permits
Vacated (no longer in effect). (law.cornell.edu)
Article 6 – Public Records
Transferred to a different agency. (law.cornell.edu)
Article 7 – PCB Waste Management
Transferred and no longer under this title. (casetext.com)
Article 8 – Wastewater Management
Rules transferred to the Water Pollution Control Board (now found under Title 330.1 IAC 7‑1 through 7‑8); current regulations are effective as of March 26, 2025. (regulations.justia.com)
🔍 Current Highlights & Where to Find Them
Most active sections:
Water sanitation (Article 3)
Hazardous waste management (Article 4.1)
Many provisions originally under Title 320 have been transferred or vacated progressively:
Permit requirements → State Board of Health
Wastewater/waste programs → respective boards
Public records, PCB, and others similarly reassigned.
Authoritative sources:
Cornell LII and Justia list the full structure of Title 320 (regulations.justia.com, casetext.com)
Official redevelopment for Article 8 notes transfer effective April 1, 1986, but updated through March 2025 (regulations.justia.com)
📝 Summary Table
Article
Topic
Status
1
Permit requirements
Transferred (State Board of Health)
2
Environmental policy (state agencies)
Transferred
3
Water sanitation rules
Active under Title 320
4
Hazardous waste (original)
Repealed
4.1
Hazardous waste permit program
Active (Rules 4.1‑1 to 4.1‑56)
5
Solid waste/industrial waste haulers
Vacated
6
Public records
Transferred
7
PCB waste management
Transferred
8
Wastewater management
Transferred (Title 330.1 IAC)
✅ What This Means for You
Most active rule sets under Title 320 are Articles 3 and 4.1—covering water sanitation and hazardous waste.
For wastewater regulations, refer instead to Title 330.1 IAC 7.
This Title serves primarily as a historical repository, noting how regulatory authority has been shifted to other boards over time.
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