Public Notice: ADM Geologic Sequestration Well - Proposed Order SDWA-05-2025-0001
Summary
On September 19, EPA took action to protect underground sources of drinking water by issuing a proposed enforcement order to Archer Daniels Midland Co. for alleged violations of the Safe Drinking Water Act related to the company’s carbon sequestration injection project in Decatur, Illinois. EPA alleges the company violated its Class VI Underground Injection Control permit when injected fluid migrated into an unauthorized zone roughly 5,000 feet deep.
The proposed order will require ADM to take compliance measures at its well, including implementing provisions of the permit’s emergency and remedial response plan. These measures include identification and implementation of remedial actions. The order also requires a comprehensive evaluation of the fluid migration and that the company take the necessary steps to address the alleged violations.
The information that EPA has reviewed does not suggest any threat to drinking water in the area. Nearby public water systems draw from the Lake Decatur reservoir or use wells less than 110-feet deep. The fluid movement happened at approximately 5,000 feet below ground level. This means the underground drinking water source is separated from the fluid by almost a vertical mile and that it is protected by layers of rock. Public water systems in the area will continue to monitor and report on contaminants regulated under the Safe Drinking Water Act and have been advised to monitor and track secondary water quality criteria, such as taste and odor.
Important Information about the Public Comment Process
The EPA comment period closed on Oct. 21, 2024.
Applicants or Respondents
Archer-Daniels-Midland Company (ADM)4666 E. Faries Parkway
Decatur, IL 62526
United States
Docket Numbers
- SDWA-05-2025-0001