• AIM

    A method of installation approved by the water undertakers (water suppliers) under Regulation 4 of the Water Supply (Water Fittings) Regulation/Scottish Water Byelaws. Regulations 4 (6) & 12 of the Water Supply (Water Fittings) Regulations read more

  • Air gap

    "An air gap" means a visible, unobstructed and complete physical air break between the lowest level of water discharge and the level of potentially contaminated fluid downstream (critical water level) within a cistern, vessel, fitting or read more

  • Approved contractor

    A person who– (a) has been approved by the water undertaker for the area where a water fitting is installed or used, or (b) has been certified as an approved contractor by an organization specified in writing by the regulator. read more