WATCH: Two Ontario families say Superior Plumbing and Heating gave them quotes of $33,000 and $15,000 for repairs that only cost $1,700 and $50 to fix.

The proposed changes for the 2027 NSPC will be available to the public for downloading and viewing after June 15.

Based on data from more than 1,000 households, the study provides an evidence-based approach to right-sizing plumbing systems.