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Ionia · Ionia County · Michigan

Septic in Ionia, MI

Ionia is in Ionia County, whose health department offers a loan evaluation for sales and refinancing. The county publishes no sale mandate that we can cite, so ask the department before you list.

Residents
12,950
Homes built before 1980
78.5%
Median home value
$161,100

Census figures: ACS 2023 five-year estimates (B01003, B25034, B25077).

Written by the SepticMatch editorial teamLast reviewed Oct 19, 2026

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Ionia County sets the septic rules

Septic permits, sale inspections and installer rules are set by the county health department, not by the city. A loan evaluation for sales and refinancing, and few published rules.

Who permits septic systems
Ionia County Health Department
Inspection at sale
No rule found in the county's published code
Permit steps
Permits for all onsite sewage systems including repairs; soil and site evaluation after application and fee payment; phone and on-site consultations.

See the Ionia County septic rules

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