Illicit Discharge Detection and Elimination (IDDE) Program

The goal of the IDDE program is to systematically find and eliminate illicit sources of non-stormwater discharges to its municipal separate storm sewer system and implement procedures to prevent such discharges.  

IDDE Program

• Marion's IDDE

Sanitary Sewer Overflow (SSO) Inventory

• SSO 2-24-2025 (PDF)
• SSO 5-30-2024 (PDF)
• SSO 5-31-2023 (PDF)
• SSO 11-17-2021 (PDF)
• SSO 1-22-2021 (PDF)

Dry and Wet Weather Screening

• Fiscal Year 2025 Summary (PDF)
• Fiscal Year 2024 Summary (PDF)
• Fiscal Year 2023 Summary (PDF)
• Fiscal Year 2022 Summary (PDF)