Environmental Rules in Missouri (2026)

Missouri's Clean Water Law makes it unlawful to discharge stormwater from a point source without an operating permit…

Boone County requires a stormwater discharge permit and an approved management plan before building, altering, or…

Unincorporated Cass County runs a storm water management program under the federal Clean Water Act's NPDES Phase II…

Land disturbance of one acre or more in Missouri needs a state construction stormwater permit from the Department of…

Columbia, Missouri requires an engineered stormwater management plan for most development projects, though…

Florissant's nuisance code bans discharging waste materials, oil, gasoline, lawn clippings, tree limbs or any other…

Unincorporated Greene County requires stormwater detention facilities for new non-agricultural construction under the…

Independence bans dumping anything but storm water into its municipal storm sewer system and lets the Municipal…

Unincorporated Jackson County requires stormwater systems to meet APWA design standards, and property owners must keep…

Unincorporated Jefferson County requires a land disturbance permit for any project disturbing 5,000 square feet or…

Kansas City bills every property a monthly stormwater utility fee based on impervious runoff surface and bans dumping…

Kirkwood makes larger infill projects capture their own runoff before it leaves the lot. Section 5-202 requires a…

Lee's Summit requires a City land disturbance permit for any site clearing more than 2,000 square feet of ground. Fees…

O'Fallon Code Section 407.030 puts most stormwater detention basins in the hands of the property owner or homeowners'…

Springfield, Missouri requires a stormwater permit before construction covered by its Flood Control and Water Quality…

New subdivisions in unincorporated St. Charles County must install separate storm sewers and, once they disturb an acre…

St. Louis caps how much parking-lot stormwater can drain untreated to the street: 3,000 square feet to street frontage…

Before grading or disturbing land anywhere in unincorporated St. Louis County, from a single subdivision lot to a…

Missouri requires a state land disturbance operating permit from the Department of Natural Resources before…

Florissant's Land Disturbance Code, Chapter 505 Article IX, requires a land disturbance permit and Best Management…

Boone County requires subdividers to submit an Erosion Control Plan with the final plat for every major and minor…

Zoning Order Section 400.520 requires erosion and sediment controls on any land-disturbing use in unincorporated Cass…

Any construction project in unincorporated Clay County that disturbs one acre or more, or less than an acre as part of…

Columbia, Missouri requires a land disturbance permit before any grading, clearing, or utility work disturbs one acre…

Anyone grading land in unincorporated Greene County must get a Resource Management Department erosion control plan…

Independence requires an erosion control permit, plan, and financial bond for clearing, grubbing, grading, or building…

Grading, excavating, or filling land in unincorporated Jackson County requires an Erosion and Sediment Control permit…

Jefferson County requires a land disturbance permit before any grading, clearing or construction activity that disturbs…

Kansas City requires a site disturbance permit before clearing, grading, excavating, or filling land, with fees based…

Kirkwood requires a grading permit from the Director of Public Services before any land disturbance, and the city's…

Any land disturbance in Lee's Summit that could carry sediment off-site needs a land disturbance permit, and the City…

O'Fallon requires a Stormwater Pollution Prevention Plan (SWPPP) with engineered erosion and sediment controls before…

Springfield, Missouri requires a land disturbance permit for any grading, clearing, or excavation disturbing one acre…

St. Charles County requires a land disturbance permit before anyone disturbs 5,000 square feet or more of…

St. Louis requires a building permit before any site grading or excavation, but exempts minor fill or cuts that change…

St. Louis County's Land Disturbance Code sets hard deadlines for stabilizing bare soil on active construction sites…

Missouri's Flood Resiliency Act establishes a statewide Flood Resiliency Program, administered by the Department of…

No building or fill work is allowed in Boone County's mapped flood zones without a floodplain development permit from…

The Cass County Floodplain Management Order, Zoning Order § 400.400, applies to every unincorporated parcel FEMA maps…

Florissant requires a floodplain development permit for any construction, fill, or substantial improvement within the…

Independence requires a floodplain development permit for any construction in special flood hazard areas mapped on the…

Jefferson County requires a floodplain development permit for any construction in mapped A, AE, AO or AH flood zones on…

Kirkwood requires a floodplain development permit for any construction inside its mapped special flood hazard areas…

Lee's Summit requires a floodplain development permit for any construction inside the numbered and unnumbered A and AE…

Any construction or development inside an O'Fallon flood hazard area needs a floodplain development permit before work…

Springfield reviews every subdivision and new development in a mapped special flood hazard area to confirm it will be…

St. Louis requires a floodplain development permit before any new construction, fill, or substantial improvement in a…

Chapter 1008 of the St. Louis County Code bars any development in the county's mapped A, AE, AO, and AH flood zones…

Columbia's Unified Development Code requires new or substantially improved residential structures in mapped flood…

Unincorporated Greene County requires a Floodplain Development Permit for any construction in a mapped flood zone, and…

Unincorporated Jackson County regulates flood-hazard land under the UDC's Floodway (FW) and Floodway Fringe (FF)…

Any construction, substantial improvement, or manufactured home placement in Kansas City's mapped special flood hazard…

In the Floodway Fringe Overlay District, new construction and substantial improvements on land mapped Zone A or Zone AE…

Mooring a drydock, float, wharfboat, or other landing facility at the City's improved public wharf on the Mississippi…

Jackson County requires a permit to moor, dock, or store any watercraft at designated mooring docks or dry storage…

Boat docks, marinas and piers are a permissive use only in St. Charles County's Riverfront (RF) and Park Recreational…

Non-commercial boat docks are a permitted, by-right use in St. Louis County's "FP" Flood Plain District, and marinas…

Florissant bars delivery trucks from arriving, idling or making deliveries at a shopping center or business during…

O'Fallon Code § 215-237(G)(6) lists prolonged engine idling among the acts that can be cited as unlawful noise: it bars…

St. Louis caps motor vehicle idling at five minutes per hour, or ten minutes when it's below 32°F, with narrow…

St. Louis County bans letting a vehicle engine idle for more than three consecutive minutes while parked, standing, or…

Kansas City's zoning code requires every off-street loading area serving a qualifying commercial, industrial, or…

Florissant requires new and substantially improved homes in mapped flood zones to elevate their lowest floor, including…

Jefferson County requires new and substantially improved structures in mapped flood zones to elevate the lowest floor…

New homes and substantially improved residential structures in an O'Fallon flood hazard area must have their lowest…

New homes in Boone County's mapped flood zones must have their lowest floor built at or above the base flood elevation…

Cass County's Floodplain Management Order requires new or substantially improved residences in flood-hazard districts…

Columbia, Missouri requires new and substantially improved homes in mapped flood hazard areas to elevate their lowest…

Unincorporated Greene County requires new and substantially improved buildings in mapped flood zones to sit one foot…

Independence, Missouri requires new and substantially improved residential structures in special flood hazard areas to…

In unincorporated Jackson County's mapped floodway and floodway fringe, new and substantially improved residences must…

Kansas City requires new and substantially improved homes in flood hazard areas to elevate the lowest floor one foot…

New and substantially improved buildings inside Kirkwood's mapped flood zones must sit above the base flood elevation…

In mapped special flood hazard areas with published base flood elevations, Lee's Summit requires new and substantially…

Springfield's mechanical code amendment requires equipment and materials installed in a regulated floodplain to sit at…

New homes and additions in unincorporated St. Charles County's mapped Zone A and Zone AE must sit with the lowest…

New construction and substantial improvements in St. Louis's mapped flood hazard areas must have the lowest floor…

Where the County has mapped a base flood elevation on a numbered A, AE, or AH zone, Section 1008.050 requires new…