The department works in many ways to protect Missouri’s water resources. We issue permits, inspect sources of water pollution and analyze water level data. The department provides financial and compliance assistance and, when necessary, enforcement action to address violations of water quality regulations. We work with stakeholders to develop a state water resources plan. We invite you to help us make a difference in protecting Missouri’s water resources. 

Citizens Guide to Water Permits
Find help understanding permits and the processes
Citizens Guide to Water-Related Rules and Regulations
Understanding rules and regulations
Water Planning
Water resources and water quality planning
Water Quality Standards, Impaired Waters and Total Maximum Daily Loads
Learn more about how we help protect Missouri's water quality
Drinking Water Annual Reports
Drinking Water Watch, Consumer Confidence Reports, Census Reports, Compliance Reports
Clean Water Compliance and Enforcement
Active enforcement cases and reports for clean water violations
Nonpoint Source Pollution Section 319
Funding and resources to protect water quality
Laboratory Sampling Results Search System Selection Criteria (LIMS)
Information about the Laboratory Sampling Results Search System Selection Criteria
Environmental Geology Assistance
Geology and hydrology assistance including geohydrologic site evaluations
Missouri Water Tracing Laboratory
Groundwater tracing and registration
Water Financial Opportunities
Providing financial assistance to ensure clean, reliable water supplies
Success Stories
Stories of how communities used grants and loans to improve their water supplies
Public Notices
Provide input on draft permits, plans or rules on public notice
Find a meeting or event near you
Document Search
Search water related documents in one location for easy access

Contact Information