Section R. 325.1611 - Application of rules to existing water suppliesRule 111.
(1) When extensive changes or repairs are made to a water supply system that was constructed before the effective date of these amendatory rules, the changes or repairs shall be in compliance with the provisions of these rules unless a deviation is issued pursuant to the provisions of R 325.1613. Extensive changes include replacing the entire casing, removing a casing from the ground, or changing aquifers.(2) Upgrading a water supply system to conform with these rules is not required when minor repairs to the system occur, such as any of the following: (a) Replacing a telescoped well screen.(b) Changing screen elevation.(c) Deepening or plugging back a bedrock well.(d) Installing a liner pipe.(e) Replacing a pump, controls, pump drop pipe, or pressure tank.(f) Chemical treatment of the well or well disinfection.Mich. Admin. Code R. 325.1611