Michigan Septic & Well Water Rules

In Michigan, local health departments handle septic permits, site evaluations and inspections, with oversight from EGLE (Environment, Great Lakes, and Energy).

This is a short state page. It covers only the facts we've verified from official sources so far.

Septic systems

• Contact your local health department for septic permits, site evaluations, inspections and failure investigations. EGLE oversees the program.

Private well testing

• EGLE's Drinking Water Laboratory in Lansing tests private well water and provides bottles and instructions. Some local health departments also offer testing.

Frequently asked questions

Sources

• EGLE: Onsite Wastewater Management
• EGLE: Private Residential Water Well Testing

Last checked: October 21, 2026