8.27. A contractor or owner-builder may install nonmetallic piping only if it meets the requirements of CAN/ULCS660, Standard for Nonmetallic Underground Piping for Flammable and Combustible Liquids, published by Underwriters’ Laboratories of Canada. The piping must be installed so that there are no joints in the ground.
O.C. 220-2007, s. 1; 87-2018O.C. 87-2018, s. 211.