Stormwater in St. Louis managed by the Metropolitan St. Louis Sewer District (MSD), the regional authority covering the City and St. Louis County. Projects disturbing 1+ acre require MSD permits and water quality controls per MSD Stormwater Design Manual.
MSD (Metropolitan St. Louis Sewer District) has jurisdiction over stormwater and wastewater for the City of St. Louis and St. Louis County under its 1954 charter. MSD Rules and Regulations and the MSD Stormwater Design Manual govern new development: projects disturbing 1 or more acres require a Land Disturbance Permit with erosion control plan; projects adding 5,000+ sq ft of impervious surface trigger water quality volume treatment (first 1.14 inches of runoff) and detention. St. Louis has combined sewers in much of the older core, and MSD is under federal consent decree (Project Clear) to reduce combined sewer overflows into the Mississippi River and River des Peres. MS4 NPDES permit compliance mandatory. Private stormwater systems must be maintained by property owners with MSD inspection rights.
MSD stop-work orders, fines up to $10,000 per day under its charter authority, and remediation requirements for unpermitted discharges.
St. Louis, MO
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St. Louis, MO
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St. Louis, MO
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St. Louis, MO
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St. Louis, MO
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St. Louis, MO
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See how St. Louis's stormwater management rules stack up against other locations.
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