Indianapolis updates stormwater manual ahead of new MS4 permit requirements

June 25, 2025 | Indianapolis City, Marion County, Indiana


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Indianapolis updates stormwater manual ahead of new MS4 permit requirements
The City Council of Indianapolis took significant steps towards enhancing stormwater management during the Board of Public Works meeting on June 25, 2025. The council approved updates to the stormwater manual, which serves as the regulatory framework for stormwater activities in the city. This update is crucial as it aligns with a newly issued five-year MS4 permit that mandates compliance by February 2026.

Shannon, a key presenter at the meeting, emphasized the collaborative effort behind these changes, acknowledging the contributions of the stormwater team and consulting partners. The updates aim to improve the user-friendliness of the manual for those applying for drainage permits, addressing feedback received from the design community.

Gail Boydson, the MS4 coordinator, provided an overview of the changes, which include clarifications to enforcement processes, improved terminology, and streamlined requirements to facilitate compliance. The council highlighted the importance of these updates, particularly in light of past challenges with regulatory compliance that had previously drawn scrutiny from the EPA.

The meeting also featured a public comment session, allowing community members to voice their opinions and concerns regarding the proposed changes. This engagement reflects the council's commitment to transparency and community involvement in the regulatory process.

Looking ahead, the council plans to address additional topics, including the implications of recent state legislation on stormwater management and the evaluation of non-stormwater discharges into the stormwater system. These discussions will be critical as the city continues to refine its approach to stormwater management and ensure compliance with evolving regulations.

The approved updates mark a proactive step towards enhancing environmental protections and improving the overall efficiency of stormwater management in Indianapolis, setting the stage for future developments in the city's infrastructure and regulatory framework.

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