Wayne County sets the septic rules
Septic permits, sale inspections and installer rules are set by the county health department, not by the city. A time-of-sale rule that stops at the Detroit city line.
- Who permits septic systems
- Wayne County Environmental Health (Public Health), Wayne, Michigan
- Inspection at sale
- Required
- Permit steps
- A valid permit comes before installation; the county asks for a form, proof of a street address, the 10-digit parcel ID, a survey and legal description for new construction, a plot plan and fees. Permits last one year, per the county's page; confirm with the department.
See the Wayne County septic rules
Flat Rock also touches Monroe County.