The Ontario Building Code | Plumbing Facilities for Dwelling Units

3.7.4.5. Plumbing Facilities for Dwelling Units

(1) A dwelling unit where a piped water supply is available shall be provided with a,

(a) kitchen sink,

(b) lavatory,

(c) water closet or drainless composting water closet, and

(d) bathtub or shower stall.