Best Septic System Installation in Ann Arbor, MI

How much does a new septic system cost in Michigan?

A conventional septic system typically costs $15,000 to $30,000, depending on local permitting complexity, soil conditions, and labor costs. Alternative systems (mound systems, drip irrigation, FAST systems) required in certain areas cost even more.

What permits are needed for septic installation in Michigan?

You need a Soil Evaluation approval from your county health department and a Construction Permit before installation. All work must comply with your county health department's requirements under MDHHS's Michigan Criteria for Subsurface Sewage Disposal — Michigan is the only state without a statewide sanitary code for onsite wastewater, making the county the permitting authority. In some areas, additional regional commission approvals may be required. The permitting process typically takes 2-4 months.

How long does septic system installation take in Michigan?

The physical installation usually takes 3-7 days for a conventional system. However, the entire process from initial soil testing through final inspection can take 3-6 months due to comprehensive permitting requirements.

What type of septic system do I need in Michigan?

The system type is largely determined by your county health department, following MDHHS's Michigan Criteria for Subsurface Sewage Disposal, based on soil percolation results, lot size, setback distances, and proximity to wells or water bodies. Many properties in certain areas require alternative systems due to high water tables, poorly draining soils, or tight lot configurations.