Michigan Compiled Laws, Chapter 325. Health § 325.1019a

Sec. 19a. (1) If the state or federal government is or was the owner or operator of real property at the time a substance of concern was used on the real property, the state or federal government shall provide an alternative water supply to the users of an impacted water source in the vicinity of the real property if all of the following conditions are met:

(2) If the conditions of subsection (1)(a), (b), and (c) are met, the state or federal government that is or was the owner of the real property shall conduct long-term monitoring to delineate the extent of the migration of the substance of concern. The results of this monitoring must be provided to the department and to the Michigan department of health and human services. If the monitoring identifies additional impacted water sources containing the substance of concern, the state or federal government that is or was the owner of the real property shall provide an alternative water supply for the users of those additional impacted water sources.

(3) If a state agency or a political subdivision, including a local health department as defined in section 1105 of the public health code, 1978 PA 368, MCL 333.1105, has provided an alternative water supply to the users of an impacted water source, and the conditions of subsection (1)(a), (b), and (c) have been met, the state or federal government that is or was the owner of the real property shall reimburse the state agency or the political subdivision for the cost of providing the alternative water supply.

(4) As used in this section: