Missouri SWPPP requirements (2026)
Can I write my own SWPPP in Missouri?
We could not verify Missouri's preparer requirements from any public permit text, so we treat Missouri as not serviceable. Basis: MOR100 (permit conditions published only inside the MoGEM ePermitting portal).
Who may prepare the plan in Missouri
Our reading of MOR100 (permit conditions published only inside the MoGEM ePermitting portal):Missouri could not be verified: the MOR100 permit conditions are only available inside the state ePermitting portal, so there is no public text to quote and we will not guess. The MOR100 permit conditions are published only inside the MoGEM ePermitting portal. No publicly citable text was obtainable on 2026-08-03, so we can neither confirm nor rule out a licensed-preparer requirement.
The gate scan classified Missouri from MOR100 (permit conditions published only inside the MoGEM ePermitting portal), but no single sentence was transcribed for this state — so the paragraph above is our reading, not the permit's words. Read the source and judge it yourself.
How Missouri differs from the federal baseline
States with no NPDES authorisation of their own run on the EPA 2022 Construction General Permit, whose "qualified person" definition is a knowledge and skill threshold that the operator's own staff can meet — it names no licence. We cannot say where Missouri sits relative to it, because the permit conditions are not published anywhere we can read. That is the whole reason this state is not serviceable.
Federal baseline: EPA 2022 CGP (no state NPDES authorisation), Appendix A definitions.
What that means for a 1–5 acre site
Below one disturbed acre, federal construction general permit coverage is usually not required at all unless the site is part of a larger common plan of development. Check whether you need a SWPPP before you pay for one.
Above five disturbed acres you are outside the 1–5 acre range this tool was built for. Several states change their preparer requirements above five acres, so re-read your state permit before relying on a self-prepared plan.
County and city rules are not covered here. This page answers the state-level question only; a local authority can require more, and that is for you to check.
Missouri SWPPP questions
- Can I write my own SWPPP in Missouri?
- We could not verify Missouri's preparer requirements from any public permit text, so we treat Missouri as not serviceable.
- Why is Missouri treated as a no?
- Missouri could not be verified: the MOR100 permit conditions are only available inside the state ePermitting portal, so there is no public text to quote and we will not guess. The MOR100 permit conditions are published only inside the MoGEM ePermitting portal. No publicly citable text was obtainable on 2026-08-03, so we can neither confirm nor rule out a licensed-preparer requirement. The clause is MOR100 (permit conditions published only inside the MoGEM ePermitting portal), read on 2026-08-03.
- Which acreage counts — the whole site or the disturbed part?
- Disturbed area is what these clauses measure, and it is what the questionnaire asks for — a 40-acre parcel with 1.5 disturbed acres is a 1.5-acre project for this purpose. Total site area is asked for separately and does not decide the answer.
- Does Missouri run its own permit, or the federal one?
- On its own. Missouri issues the construction general permit or implementing regulation this page was read from — MOR100 (permit conditions published only inside the MoGEM ePermitting portal). The federal permit still sets what a SWPPP has to contain; the state document is what decides who may write it here.
- What does a SWPPP cost in Missouri?
- A consultant-prepared SWPPP for a small site is commonly quoted at around $497 — a market figure inherited from our own competitor review, which we have not re-verified. In Missouri that cost is not optional: the permit requires a credentialed preparer, so there is no self-prepared route to weigh it against, and SwpppDraft cannot serve Missouri at any price.
- Do county or city rules apply on top of this?
- They can, and this page does not cover them. The scan behind it answered the state-level question only, so a county or municipality in Missouri may require more — a stamped plan, a local permit, or a different form — even where the state permit does not. Ask the authority that will receive your paperwork before you write the plan, not after.
- Who should I go to in Missouri instead?
- Ask the state agency directly for the permit conditions before you rely on any self-prepared plan. We would rather block a state than guess at its rules.
- Is there anything else to know about Missouri?
- Blocked conservatively. If Missouri publishes the permit text, this state can be re-classified.
Source and verification
MOR100 (permit conditions published only inside the MoGEM ePermitting portal). Missouri publishes the MOR100 conditions only inside its ePermitting portal. There is no public text to link, which is the reason this state is blocked. State-law information on this page was verified on 2026-08-03. County and city rules are not covered. Missouri in context:its row in the 50-state table.
What we are, and what stays your responsibility
- SwpppDraft is a document generation tool. It does not provide engineering services, legal services, or compliance consulting, and no engineer or attorney reviews what it produces.
- Everything in the document is built from the site facts you enter. Checking that those facts are right, and that the resulting plan fits your project, is yours to do.
- We do not file anything on your behalf, we do not certify or endorse your compliance, and we accept no liability for what happens when you use the document.
- State-level requirements carry the date we verified them. County and city rules are not covered — some local jurisdictions require a licensed preparer even where the state does not, and you have to check that yourself.
- When the product opens, our total liability will be capped at the amount you paid us. Today that amount is zero, because nothing is for sale.