Missouri Environment - General regulations & environmental compliance analysis

Missouri Environment - General: What you need to know

Overview of Missouri's Environmental Rules


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In Missouri, the counterpart to the U.S. Environmental Protection Agency (EPA) is the Department of Natural Resources (DNR). DNR is responsible for protecting Missouri's land, water, and air from pollution. Missouri has been delegated authority by EPA to administer and enforce Missouri's air, water, and waste management regulatory programs.


Missouri's air program is shaped by its state implementation plan (SIP), which sets forth basic strategies for the implementation, maintenance, and enforcement of the National Ambient Air Quality Standards (NAAQS). As mandated by the federal Clean Air Act (CAA), each state must adopt and submit a SIP to EPA for approval. The Missouri SIP was officially submitted in January 1972 and is frequently amended to comply with the 1990 CAA amendments. The SIP focuses on permitting, emissions standards, nonattainment areas, hazardous air pollutants, and numerous other air-related requirements in the various areas of the state.

The Air Pollution Control Program of DNR's Department of Environmental Quality (DEQ) administers and enforces Missouri's air rules.


Missouri is fully authorized to administer the National Pollutant Discharge Elimination System (NPDES) for wastewater dischargers. Missouri's effluent standards are categorized by the type and quality of the water into which the discharge is being made. The standards generally follow the federal minimum standards under the Clean Water Act. Like the federal rules, the state incorporates whole effluent toxicity (WET) testing into their wastewater discharge permits.

The state has also established the Special Area Land Treatment (SALT) program in ...

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