• “private SUD system” means any SUD system which is not a public SUD system;

• “public SUD system” means any SUD system which is vested in Scottish Water;

• “road water” means the run-off of rainwater from any road for the time being entered in a list of public roads kept by a local roads authority under section 1(1) of the Roads (Scotland) Act 1984;

• “SUD system” means a sustainable urban drainage system;

• “sustainable urban drainage system” means a drainage system which—

  1. a

     facilitates attenuation, settlement or treatment of surface water from 2 or more premises (whether or not together with road water), and

  2. b

     includes one or more of the following: inlet structures, outlet structures, swales, constructed wetlands, ponds, filter trenches, attenuation tanks and detention basins (together with any associated pipes and equipment);