Rule 720c. Following the completion of initial source water monitoring under 40 CFR 141.701 (a), as adopted by reference in R 325.10720b, a Subpart H supply that is subject to R 325.10611d and that plans to make a significant change to its disinfection practice, as defined in R 325.10722 (4) (a), shall develop disinfection profiles and calculate disinfection benchmarks for Giardia lamblia and viruses as described in R 325.10720d. Before changing the disinfection practice, the Subpart H supply shall notify the department and shall include in this notice all of the information in R 325.10722 (4) (b) (i) to (iv).
Mich. Admin. Code R. 325.10720c