Missouri counties, by region
These are the counties covered in depth here, grouped the way Missouri actually divides up: the collar counties around St. Louis and Kansas City, the Springfield and Branson country, the lake counties, and mid-Missouri. Each page names the agency that issues that county's septic permits, what the county requires beyond the state standard, and what the ground is like there. For every other Missouri county, the permit directory names the authority.
St. Louis collar
-
St. Charles County, MO
Permits through St. Charles County Division of Building and Code Enforcement. County seat St. Charles.
-
Jefferson County, MO
Permits through Jefferson County Code Enforcement. County seat Hillsboro.
-
Franklin County, MO
Permits through Franklin County Building Department. County seat Union.
-
Lincoln County, MO
Permits through Lincoln County Health Department, Office of Environmental Sanitation. County seat Troy.
Kansas City collar
-
Cass County, MO
Permits through Cass County Building Codes, Environmental Health and Zoning Department. County seat Harrisonville.
-
Clay County, MO
Permits through Clay County Public Health Center, Environmental Health Protection. County seat Liberty.
-
Platte County, MO
Permits through Platte County Health Department, Environmental Health. County seat Platte City.
Springfield
-
Greene County, MO
Permits through Greene County Building Regulations. County seat Springfield.
-
Christian County, MO
Permits through Christian County Health Department, Environmental. County seat Ozark.
Lake of the Ozarks
-
Camden County, MO
Permits through Camden County Wastewater Department. County seat Camdenton.
-
Morgan County, MO
Permits through Morgan County Health Center, Environmental. County seat Versailles.
Branson
-
Taney County, MO
Permits through Taney County Environmental Services. County seat Forsyth.
mid-Missouri
-
Boone County, MO
Permits through Boone County Resource Management, Inspections Division. County seat Columbia.
-
Callaway County, MO
Permits through Callaway County Sewer District. County seat Fulton.
Why are these grouped by region rather than listed alphabetically?
Because that is how people locate themselves. Nobody thinks of their property as being in the county between Camden and Cass. They think of it as being at the lake, or out past Wentzville, or south of Springfield. The regions here follow the ground: the St. Louis and Kansas City collars where subdivisions meet unsewered acreage, the lake counties where shoreline rules bite, the Ozark country where bedrock decides the system, and mid-Missouri.
My county is not on this list
The county permit directory covers every Missouri county and names the agency that issues the permit there, including the counties where the state department administers directly rather than a local office. The statewide guides apply wherever you are: how the permit works, the soil evaluation, and who may do the work.
Contractors serve across county lines, so a request from a county without its own page here still reaches someone who works your area.
Source: Missouri Department of Health and Senior Services, Onsite Wastewater Treatment, read 2026-08-26.
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.