Missouri Stormwater-Municipalities regulations & environmental compliance analysis

Missouri Stormwater-Municipalities: What you need to know

Governing Law and Regulations

Missouri Clean Water Law: Missouri Revised Statutes (Mo. Rev. Stat.) 644.006 to 644.150

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National Pollutant Discharge Elimination System (NPDES) permits: 10 Missouri Code of State Regulations (CSR) 20-6.010 to 20-6.020

Municipalities: 10 CSR 20-6.200(4) and 10 CSR 20-6.200(5)

Regulatory Agencies

Missouri Department of Natural Resources (DNR)Division of Environmental QualityWater Pollution Control Program

Missouri Clean Water Commission (CWC)

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Missouri follows the federal permitting regulations for stormwater discharges, including those from and municipal separate storm sewer systems (MS4s). See the national section STORMWATER—MUNICIPALITIES for more information on the federal permitting requirements. In Missouri, these National Pollutant Discharge Elimination System (NPDES) permits are called Missouri State Operating Permits.

Administration and enforcement. DNR's Water Pollution Control Program is responsible for the administration and enforcement of the stormwater discharge permit regulations for MS4s in Missouri.

State Requirements

MUNICIPALITIES

10 CSR 20-6.200(4) and 10 CSR 20-6.200(5)

National and state stormwater regulations require certain small communities to obtain a NPDES permit. Missouri has three Phase I communities and approximately 152 Phase II communities. These small communities with MS4s were required to obtain a NPDES permit by March 11, 2003, and develop a stormwater management program by March 10, 2008.

The DNR issues a general permit for regulated MS4s with populations between 1,000 and ...


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