The Ontario Building Code | Shut-off Valves
188.8.131.52. Shut-off Valves
(1) Except for a single-family dwelling, every risershall be provided with a shut-off valve at the source of supply.
Note: On July 1, 2017, Sentence 184.108.40.206.(1) of Division B of the Regulation is amended by striking out "Except for a single-family dwelling" at the beginning and substituting "Except for a house containing not more than one dwelling unit". (See: O. Reg. 139/17, s. 55)