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Septic & well regulations in Macomb County, MI

Macomb County is located in the Southeast region of Michigan. Macomb County is underlain primarily by glacial lake-plain clay and clay loam soils, which have very slow percolation rates. Much of the county is sewered, but northern and eastern townships still rely on on-site systems where the heavy clay soils create significant design challenges.. Understanding local permit requirements and soil conditions is essential before installing, repairing, or inspecting a septic system.

Permits & Requirements

New Installation

Permit required from Macomb County Health Department before any new septic system installation. A licensed installer must submit a soil evaluation and design for review and approval.

Repair

Repair permit required from Macomb County Health Department. Written approval is required before any repair or modification work begins.

Inspection

Point-of-sale inspections are available through the health department. The department issues formal inspection reports for real estate transactions.

Macomb County Environmental Health

Macomb County Health Department

Contact the county environmental health department for permit applications, soil evaluation scheduling, and regulatory questions.

Soil & Terrain Characteristics

Macomb County is underlain primarily by glacial lake-plain clay and clay loam soils, which have very slow percolation rates. Much of the county is sewered, but northern and eastern townships still rely on on-site systems where the heavy clay soils create significant design challenges.

County-Specific Considerations

Macomb County borders Lake St. Clair, and EGLE maintains heightened oversight for on-site systems near the lake and its tributaries. PFAS contamination has been detected in some areas of the county; well owners in affected townships should contact the health department for testing guidance.

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Septic Permits & Regulations in Macomb County — FAQ

How much does a septic permit cost in Macomb County, MI?

Septic permit fees in Macomb County vary by permit type. New installation permits typically cost $200–$500, while repair permits are usually $100–$300. Contact Macomb County Health Department at (586) 469-5236 for current fee schedules.

How long does it take to get a septic permit in Macomb County?

The septic permit process in Macomb County generally takes 2–6 weeks, depending on soil evaluation scheduling and application completeness. Soil evaluations must be performed by a licensed soil scientist before applying.

Do I need a soil evaluation for a septic permit in Macomb County?

Yes. Macomb County requires a professional soil evaluation before issuing any septic permit. A licensed soil scientist evaluates soil type, depth, drainage, and water table levels to determine the appropriate septic system design.

Who handles septic inspections in Macomb County, MI?

Macomb County Health Department oversees all septic system inspections in Macomb County. Contact them at (586) 469-5236 to schedule an inspection or ask about requirements.

Can I install my own septic system in Macomb County?

Macomb County requires septic system installation by licensed contractors. All installations must be permitted through Macomb County Health Department and pass inspection before the system can be used.

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