Ontario Regulation Summary

Ontario requires cross-connection control under the Ontario Water Resources Act, RSO 1990, c O.40 and the Ontario Building Code (O. Reg. 332/12). Municipalities including Toronto, Ottawa, Hamilton, and London operate formal cross-connection control programs with active enforcement and annual testing requirements.

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Cities We Serve in Ontario

Toronto

40,000+ regulated assemblies. Canada's most active cross-connection control program.

Toronto Municipal Code Chapter 851
Ottawa

Federal government, embassy district, university research, ByWard Market.

City of Ottawa By-Law No. 2018-102
Mississauga

Pearson precinct, Heartland retail, healthcare, industrial corridor.

Region of Peel By-Law 31-2012
Brampton

Logistics hub, hospitality sector, Brampton Civic Hospital.

Region of Peel By-Law 31-2012
Hamilton

Steel/manufacturing heritage, McMaster, James St. restaurant district.

Hamilton Water By-law 03-244
London

LHSC healthcare campus, Western University, strong industrial sector.

By-law C.P.-1488-244
Markham

Technology campuses, data centres, pharmaceutical, Markham Stouffville Hospital.

York Region By-Law 2018-54
Vaughan

Vaughan Mills, VMC precinct, Highway 400 industrial, entertainment venues.

York Region By-Law 2018-54
Kitchener

Communitech tech hub, food manufacturing legacy, Grand River Hospital.

Region of Waterloo By-law 08-019
Windsor

Automotive manufacturing, cross-border industrial, Windsor Regional Hospital.

City of Windsor By-law 165-2004

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