Paragraph 21
Authorising regulators to serve on holders of permits—
notices requiring them to take remedial action in respect of contraventions, actual or potential, of conditions to which their permits are subject;
notices requiring them to provide such financial security as the regulators serving the notices consider appropriate pending the taking of remedial action in respect of any such contraventions;
notices requiring them to take steps to remove or reduce, or to mitigate the effect of the potential consequences of, the following imminent risks (whether or not arising from any such contraventions)—
an imminent risk of a significant waste of water resources or of significant damage to the environment, in the case of water regulations;
an imminent risk of a significant impediment to drainage or of a flood, in the case of flood regulations;
an imminent risk of a significant impediment to the movement of fish through regulated waters, in the case of fish regulations.