Septic permits in Boone County, MO
The rules, the agency, and what happens before anyone can dig.
Requirements
Boone County (Columbia) permits through Boone County Resource Management, this moved from City of Columbia/Boone County Public Health effective June 28, 2022, so older guidance online may send you to the wrong office. A soils morphology report must accompany every new system application, and the construction permit fee is $440. A certified installer must do the work, and no backfilling is allowed until the final inspection passes. One time-saver: if you are already pulling a building permit for a new home, you do not file a separate wastewater application. Design criteria themselves follow the uniform statewide standards rather than county-specific engineering rules.
Source: www.boonemo.gov . Rules change; confirm with the agency before starting work.
These are the county-level specifics. For the full permit process, soil-test rules, and installer licensing that apply across the state, see the Missouri septic permit guide.
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