A complete list of all programs within the Department of Environment, Great Lakes, and Energy (EGLE)
Community involvement and public participation are an essential part of EGLE’s mission, vision, and values.
SARA Title III establishes requirements regarding emergency planning and "Community Right-to-Know" reporting on hazardous and toxic chemicals for federal, state, local, and tribal governments, as well as regulated facilities.
Resources and information on utilizing RRD's data exchange and the Inventory of Facilities.
An interactive map displaying contaminated sites throughout Michigan regulated under Parts 213, 201, and 211.
The Michigan Department of Environment, Great Lakes, and Energy’s (EGLE) Water Well Viewer (WWV), is an interactive mapping system that displays water wells along with other information, such as wellhead protection areas, underground storage tanks, and sites of environmental contamination. Water well locations have been identified by address matching, the use of global positioning systems (GPS), and by legal descriptions.
This system allows water well drilling and pump installation contractors to submit water well records.
EGLE's interactive calendar is designed to provide timely information on decisions before the Director, proposed settlements of contested cases, administrative rules promulgation, public hearings, meetings and comment deadlines, and environmental conferences, workshops and training programs.
Anyone wishing to formally serve legal documents upon the Department of Environment, Great Lakes, and Energy (EGLE), or its officers or employees, may do so by the following methods.
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The Michigan Department of Environment, Great Lakes, and Energy (EGLE) completed, and the United States Environmental Protection Agency (USEPA) approved, a statewide mercury TMDL in 2018. The TMDL addresses most inland water bodies not supporting designated uses for fish consumption due to exceedances of the numeric mercury water column Water Quality Standard (WQS) and/or elevated mercury concentrations in fish tissue. Mercury-impaired water bodies not covered by the statewide mercury TMDL include the Great Lakes and connecting channels; contaminated legacy sites (i.e., Areas of Concern and Superfund sites); and certain inland water bodies where the level of pollutant reduction required to achieve the mercury WQS will be different than the mercury load that was calculated for the TMDL. The Statewide Mercury TMDL and associated load reduction goals were developed to meet the target fish tissue concentration of 0.35 milligrams per kilogram (mg/kg) based on the assumption that fish mercury concentrations will respond proportionally to reductions in atmospheric mercury loadings.
EGLE assesses fish tissue concentration data and mercury water column data on a biennial basis in accordance with our water quality monitoring strategy and our Integrated Report Assessment Methodology. Waters determined to be mercury-impaired (above the 0.35 mg/kg fish tissue target or the water column target criteria of 1.3 nanograms per liter [ng/L]) and below the 1.012 mg/kg fish tissue maximum would be considered addressed by the TMDL. Waters determined to be mercury-impaired above the 1.012 mg/kg fish tissue maximum or above the ambient water column mercury concentration of 9.5 ng/L would not be considered as addressed by the TMDL.
EGLE’s intent was to modify the TMDL document by updating the list of waters covered by the TMDL (as defined in Appendix A) every other year, in conjunction with the submittal of Michigan’s biennial Integrated Report, beginning with the 2020 version of the Integrated Report and continuing with this 2026 Integrated Report. To that end, EGLE is presenting this proposed list of new impaired water bodies to the public and the USEPA; a cumulative list of all water bodies that are included in this TMDL; and water bodies that have been restored and are no longer impaired (Integrated Report Assessment Category 2). Proposed mercury-impaired water bodies will be placed in the “Impaired, TMDL completed” Integrated Report assessment category (Category 4a). This updated list is based on additional water quality and fish contaminant monitoring data generated since the TMDL was finalized. Once the USEPA approves the revised TMDL Appendix A, the newly proposed water bodies will be part of this statewide TMDL.
Water bodies are impacted by atmospheric deposition of mercury throughout the state. Mercury is a metal that occurs naturally in the environment. Major uses of mercury in the United States include lighting, switches, instruments, the dental industry, laboratory uses, and other industrial applications. Local and global anthropogenic activities such as mining, coal combustion, and industrial uses have release mercury in excess of pre-industrial period concentrations.
EGLE developed the statewide TMDL as required under Section 303(d) of the federal Clean Water Act (CWA). The federal CWA requires a TMDL to be written for water bodies not meeting Michigan's water quality standards. The purpose of the TMDL is to gather data, identify sources, and develop appropriate goals and reasonable assurance that will restore the designated uses to the water bodies.
