MI HB6099

Expands liability for providing alternative water supplies to any person responsible for using a substance of concern on real property, not just state or federal government entities.

Requires alternative water supply provision when a public health advisory is issued for drinking water, the substance matches one used on the property, and the responsible party acknowledges contamination has migrated to groundwater.

Mandates long-term monitoring of contamination extent with results shared to the Department of Environmental Quality and Department of Health and Human Services, with alternative supplies required for any newly identified impacted water sources.

Allows state agencies or political subdivisions that provide alternative water supplies to seek reimbursement from the responsible party for costs incurred.

Exempts consumer goods, products, or services used for individual, family, domestic, or household purposes (including personal hygiene, consumption, and residential maintenance) from these requirements.