(1)  A person required to be registered under section 136E as a water carrier must, if the person becomes aware that the quality of the water in relation to which the person is registered as a water carrier is a threat to public health or is likely to become a threat to public health, take any action, to prevent the threat, that is specified in any relevant guidelines and is necessary and practicable.

(2)  Action that the relevant guidelines may specify for the purposes of subsection (1) includes, but is not limited to including, any actions for any of the following purposes:

(a) restricting or preventing the use of the water;

(b) rendering the water safe;

(c) giving warnings and information to the public about the safe use of the water or risk of using the water.