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Indiana Department of Environmental Management

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Indiana Department of Environmental Management

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IDEM: Protecting Hoosiers and the Environment since 1986.

Environmental protection in Indiana has come a long way since 1986, when the Indiana Department of Environmental Management (IDEM) was established. Since then, IDEM has grown, and employs some of Indiana's most qualified engineers, scientists and environmental project managers specializing in air, land, pollution prevention and water quality issues. Our staff members work hard to provide quality environmental oversight and technical assistance in your community and around the state. Whether you're a business owner, consultant, student, farmer, teacher or parent, IDEM is here to help you.

10/29/2026

Leaders from EPA Region 5, IDEM and industry came together in Indianapolis for the U.S. EPA Region 5 & Indiana Chamber Industry Day.

Attendees heard from IDEM Commissioner Clint Woods and federal and state experts representing enforcement, air quality, water quality, land quality, Superfund, and legal counsel and criminal investigations. Discussions highlighted program updates and environmental priorities across Indiana.

Thank you to everyone who joined the conversation and continues working to protect Indiana’s environment and support our communities.

10/29/2026

🏆 2026 Governor’s Awards for Environmental Excellence (GAEE) Spotlight 🏆

The City of Lafayette is the recipient of the Greening the Government award, for its citywide sustainability strategy in Tippecanoe County. Through coordinated planning across departments, Lafayette is advancing renewable energy, energy efficiency, EV adoption, waste reduction, water resource recovery, and green infrastructure.

Major 2025 achievements include:
🌞 810 kW array at Lafayette Renew offsetting ~22% of energy use
⚡ 220 kW array at Ross Road Lift Station reducing demand ~33%
🔆 1,420 kW total solar capacity across wastewater facilities
♻️ Deployment of electric recycling and refuse collection vehicles
🌲 315 trees planted in partnership with Tree Lafayette
💧 Expanded recycling, methane recovery, and stormwater protection

Motivated by fiscal responsibility and long‑term resilience, Lafayette is embedding sustainability into daily government operations and setting a powerful example for communities across Indiana.

We’re proud to honor the City of Lafayette as a 2026 award recipient 🌱✨

10/28/2026

Thank you to everyone who joined us at Celebrate Science Indiana! 🔬✨

This year’s event showcased the joy of discovery, the value of scientific innovation, and the incredible career possibilities waiting for young Hoosiers. Attendees explored hands‑on activities, connected with science-focused businesses and agencies, and took home ideas to keep curiosity growing.

We’re grateful to all the partners, educators, and organizations who helped inspire Indiana’s next generation of scientists.

10/28/2026

⚠️ IDEM is forecasting a Local Air Quality Advisory from 6 P.M. Wednesday, Oct. 28 until 10 a.m. Thursday, Oct. 29 in the following counties: Indianapolis (Marion County) ⚠️

Read more here: https://bit.ly/4ibI0kD

10/28/2026

This month, IDEM’s Site Investigation team conducted sampling at the former Western Tar Products facility in Terre Haute.

The site operated as a railroad tie creosoting facility from 1906 to 2011. Rail tie manufacturing involves treating wood with coal‑tar creosote to protect against rot and weathering. Historically, treatment work occurred on the north end of the property, while the south end stored untreated ties.

IDEM began investigating the site in 2009 after the discovery of a black substance along a bank of the Wabash River at the site’s south end. In collaboration with the US EPA more than 13,617 tons of coal tar were removed and disposed of from the site.

The latest fieldwork involved collecting groundwater, soil, and river sediment samples to evaluate if any potential contamination extends beyond the site boundaries. IDEM requested access to municipal and other properties for sampling. Sampling was conducted at no cost to property owners, and analysis results will be provided to them at no cost.

10/27/2026

⚠️ IDEM is forecasting a Local Air Quality Advisory from 6 P.M. Tuesday, Oct. 27 until 10 a.m. Wednesday, Oct. 28 in the following counties: Indianapolis (Marion County) ⚠️

Read more here: https://bit.ly/4zcU62S

10/27/2026

IDEM was well represented by our Office of Water Quality at the 2026 Association of State Drinking Water Administrators (ASDWA) Annual Conference in Cincinnati!

Stacy Jones presented “Finding the Middle Ground with Primacy Packages,” sharing key insights on the primacy application process. Matt Prater moderated the Workforce Session, leading conversations on building a stronger water sector workforce.

Throughout the week, Jane Roberts engaged in multiple sessions and brought back valuable updates to support IDEM’s drinking water program.

We couldn't help but feature Duke, a water leak detection dog, from a session titled “K9 Water Leak Detection: An Innovative Tool for Reducing Water Loss.”

10/26/2026

Meet Ghassan Shalabi, Permits Section Chief in IDEM’s Office of Air Quality (OAQ).

Ghassan has been with IDEM for 16 years. With a background in chemical engineering and a passion for the environment, he found that air permitting was the perfect way to combine his interests.

In his role, Ghassan helps review air permit applications, emission calculations, and permit conditions to ensure they are accurate, complete, and environmentally sound. He also helps address questions and comments from the public and U.S. EPA.

For Ghassan, the most rewarding part of his work is knowing that it helps protect Hoosiers and the environment. He takes pride in ensuring permits are effective and enforceable, helping safeguard the communities he calls home.

10/26/2026

The draft 2025–2029 Lake Michigan Lakewide Action and Management Plan (LAMP) is now available for public review!

IDEM is proud to collaborate with the U.S. Environmental Protection Agency, Indiana Department of Natural Resources, and other Lake Michigan Partnership agencies to protect and restore Lake Michigan and its ecosystem.

The draft plan highlights collaborative efforts to improve water quality, protect natural resources, and support the long-term health of Lake Michigan.

Hoosiers are encouraged to review the draft and share their feedback to help guide future restoration and protection efforts.

📅 Public comments will be accepted through November 12, 2026.
💬 Submit comments: https://bit.ly/4zbz58Y
📄 Read the draft plan: https://bit.ly/4jC4Djl

10/23/2026

IDEM’s 2026 Indiana Nonpoint Source Annual Report highlights how partnerships, conservation projects, and community involvement are helping improve water quality across the state.

Nonpoint source pollution occurs when runoff carries pollutants such as sediment, fertilizer, and bacteria into waterways. The report explores efforts to reduce this pollution, restore aquatic habitats, and support locally led watershed projects, along with 30 years of volunteer water monitoring through Hoosier Riverwatch.

Explore the interactive report to learn more about the projects, people, and progress supporting healthier Indiana waterways: https://bit.ly/4izFuom

Address

100 N Senate Avenue
Indianapolis, IN
46204

Opening Hours

Monday	8am - 4:30pm
Tuesday	8am - 4:30pm
Wednesday	8am - 4:30pm
Thursday	8am - 4:30pm
Friday	8am - 4:30pm

Telephone

+18004516027

Website

http://www.in.gov/idem/

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