Missouri’s thousands of miles of rivers, streams and lakes, along with underground aquifers, supply our state’s 6 million residents with water to drink and provide a crucial role in supporting outdoor recreation, industry and meeting our agricultural needs.

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Water Quality Standards, Impaired Waters and Total Maximum Daily Loads
Learn more about how we help protect Missouri's water quality
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Water Quality Management Planning Section 604(b)
Find more information on Water Quality Management Planning Section 604(b)
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Missouri Water Resources Plan
The 2020 Missouri Water Resources Plan
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Watershed Planning
The department provides support for watershed planning through several programs
Nutrient loss reduction strategy
Nutrient Loss Reduction Strategy
Missouri's nutrient loss reduction strategy and trading clearinghouse
Water level of a river rose over the tops of its banks, into the surrounding fields
Lower Missouri Planning Assistance to States
Working with partners to enhance flood protection in the Lower Missouri Basin
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Source Water Protection
Protecting water at the source
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Nonpoint Source Management Program - Plans and Annual Reports
Missouri submits annual reports on the progress and success in implementing the plan
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Missouri Water Supply Studies
Learn about Missouri Water Supply Studies
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Interstate Waters
Information on the Mississippi, Missouri and White rivers
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Document Search
Search all department documents in one location for easy access
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Laws, Rules and Regulations
State and federal rules governing water; rules in development

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