The Authority must issue a code in relation to—
The code may, in particular, make provision about—
If the Authority considers that a water supply licensee is not acting as required by provision contained in the code as mentioned in subsection (2)(e) or (f), the Authority may give the licensee a direction to do, or not to do, a particular thing specified in the direction.
It is the duty of a water supply licensee to comply with a direction under subsection (3), and this duty is enforceable under section 18.
The Authority must from time to time review the code and, if appropriate, issue a revised code.
References in section 63AC to the code issued under this section are to the code issued under this section that has effect at the time in question.