The Missouri Department of Natural Resources offers various training resources and courses for those who must follow environmental regulations or obtain certain licenses, professional registrations or certifications. Training is vital in helping our customers understand how to comply with federal and state rules and regulations. Learn more about available training and certification and recertification requirements.

Building Operator Certification
Energy and resource efficiency training for operations and maintenance staff
Drinking Water Operator Certification
Training and certification information for treatment and distribution system operators
Home Energy Auditor Certification
Certification and recertification requirements and guidelines for home energy auditors
Missouri Home Energy Certifications
Certification requirements and guidelines
Solid Waste Technician Certification
Training and certification information for processing and disposal area operators
Underground Storage Tank Operator Training
Free online and classroom certification training for A/B and C operators (PSTIF)
Wastewater Operator Certification
Training and certification information for treatment system operators, including CAFOs
Weatherization Network Training Providers
Third party training providers and resources for Missouri’s weatherization network
Well and Pump Installation Contractor License
Training and licensing information to construct water, heat pump or monitoring wells
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Laws, Rules and Regulations
State and federal rules governing the protection of our natural resources