Missouri

Who may prepare a stormwater plan in Missouri

We found no state level preparer credential for Missouri. On what we verified, an operator may adopt the plan without a credentialed signature. Local ordinances can still be stricter.

The answer

None found

We found no state level preparer credential for Missouri. On what we verified, an operator may adopt the plan without a credentialed signature. Local ordinances can still be stricter.

Credentials that qualify

Any qualified preparer — no state-mandated certification, license, or training is required to prepare a SWPPP under MORA00000

Missouri does not gate SWPPP preparation behind any specific certification, license, or professional credential — confirmed as an explicit absence in both the implementing regulation and MoDNR's public program materials. No PE stamp is required by the state permit program for the SWPPP itself (a City of Mexico, MO municipal grading/drainage plan review requires a licensed PE seal, but that is a local requirement layered on top, not a MORA00000 state-permit requirement). Preparers commonly hold voluntary industry credentials such as CPESC as best practice, but none is legally mandated. This conclusion rests on the regulation text and program pages, not a direct read of the full MORA00000 permit document, which is administered entirely through MoDNR's online ePermitting system and was inaccessible (HTTP 403) at every access attempt.

Verified10 CSR 20-6.200 (Missouri stormwater regulations); MoDNR Construction/Land Disturbance Permits program page (MORA00000)Source

What this means for a generated plan

On what we verified, an operator may adopt a generated plan here without a credentialed signature. Local ordinances can still impose a stricter gate than state law, so check the county or municipality as well.

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State*

Activity*

Total acres disturbed*

Total land disturbance over the whole project, including staging and access. This decides whether you need a permit at all.

Acres open at any one time

Optional. If you phase the work, the most that will be disturbed at once. Leave blank if the whole site is open together. The stabilisation deadline turns on this figure, not the total.

Part of a larger common plan of development or sale

A half acre lot inside a 40 acre subdivision is covered even though the lot alone is under the threshold. This is the most commonly missed trigger in the permit.

Receiving water and site conditions(optional, but they change the inspection frequency)

Discharges to a sediment or nutrient impaired water

Discharges to a Tier 2, 2.5 or 3 water

Arid, semi arid or drought stricken area

May allow a reduced inspection frequency during the seasonally dry period.

In Indian country

EPA keeps permitting authority in Indian country even inside a state that runs its own programme.

No account, no card, nothing transmitted.

What people ask about preparing a SWPPP in Missouri

Do I need a qualified preparer for a SWPPP in Missouri?

We found no state level preparer credential for Missouri. On what we verified, an operator may adopt the plan without a credentialed signature. Local ordinances can still be stricter.

Does a professional engineer have to stamp the plan in Missouri?

Practice act citations are routinely overstated on this point. A PE stamp is not required as a general matter in most states with no preparer gate, and where we have not verified it we will not assert either answer. Confirm with the state board or the permitting authority.

Which permit governs Missouri SWPPP requirements in Missouri All jurisdictions

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