The Missouri septic permit application
The application is not the first step, it is the fourth, and most of the delay people experience comes from arriving at it with the earlier steps missing. The statute sets the shape: notify the city, county or department, complete an application on a form the department provides, pay the fee that body sets, and obtain the construction permit before the work starts. What makes the application succeed or stall is the soil report and the plans that go with it.
Source: Section 701.046, Revised Statutes of Missouri, read 2026-08-26.
Who do I file the application with?
Whichever body administers onsite wastewater in your area. The statute names three possibilities in the same sentence, the city, the county or the department, because Missouri genuinely uses all three. In most counties it is the local health department; in others it is a sewer district, a building department or a planning and zoning office; and where no local government has taken the program on, the state department administers it.
The county directory is where to check yours before you fill anything in.
Source: Missouri Department of Health and Senior Services, Onsite Wastewater Treatment, read 2026-08-26.
What has to be submitted with it?
Plans and specifications. Before a permit to install or make a major repair is issued, plans and specifications are required for review. That is the document set your designer produces from the soil report, and it is what the reviewing authority is actually assessing.
In practice that means the soil evaluation has to be done first, the design has to be sized to what the soil will take, and where the percolation rate or the system type requires it, an engineer has to have drafted and signed or stamped the design before the file is complete.
Source: 19 CSR 20-3.060(1)(C)3., Missouri Code of State Regulations, read 2026-08-26.
What does the application fee cost?
Whatever the body administering your area has set, which is why no honest page prints a figure. The statute puts the fee in the hands of the city, county or department. Where the department itself administers, its fees are capped at a level producing revenue that does not exceed the cost of running the program.
Ask for the current fee schedule when you ask who permits. It is usually published and it is rarely the largest number in a septic project.
Source: Section 701.046, Revised Statutes of Missouri, read 2026-08-26.
What happens after the permit is issued?
The work gets built and then inspected, and how likely an inspection is depends partly on who built it: authorities inspect up to sixty percent of systems built by registered contractors and at least seventy-five percent of those built by unregistered persons. Whoever installs should know their notice obligations and keep the system open for inspection until it is released.
Do not backfill on an assumption. Confirm with your permitting authority what notice they want and when they will come.
Source: Section 701.043.3, Revised Statutes of Missouri, read 2026-08-26.
The order that avoids a stall
- Confirm which agency permits in your county, and get its forms and fee schedule.
- Ask whether the county runs its own ordinance with requirements beyond the state standard.
- Soil evaluation, with a profile pit, by someone qualified to do it.
- Design sized to the soil result, engineer-signed where the rate or the system type requires it.
- Application, plans and specifications, and fee.
- Permit in hand before anything is dug.
Get a free quote from a Missouri septic contractor
Tell us the county and the job. No email needed.
A marketing service, not a licensed contractor. Septic work is performed by independent local contractors.
Need the job done, not just the rule explained
Your request goes straight to an independent local septic contractor serving your Missouri county, usually within about an hour during the day, not a national lead list.
Tell us the county and the jobLast reviewed 2026-08-26.