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Please click the links below for information about the key Ontario acts and regulations that safeguard our drinking water. (You can see all of Ontario’s acts and regulations on e-Laws.)

Acts	Related regulations
(click for brief descriptions and links to the full acts)	(click to read the regulations on e-Laws)
Clean Water Act	O. Reg. 287/07 - General O. Reg. 231/07 - Service of Documents O. Reg. 284/07 - Source Protection Areas and Regions O. Reg. 288/07 - Source Protection Committees
Safe Drinking Water Act	O. Reg. 128/04 - Certification Of Drinking Water System Operators And Water Quality Analysts O. Reg. 242/05 - Compliance And Enforcement O. Reg. 172/03 - Definitions Of “Deficiency” and “Municipal Drinking Water System” O. Reg. 171/03 - Definitions Of Words And Expressions Used In The Act O. Reg. 170/03 - Drinking Water Systems O. Reg. 248/03 - Drinking Water Testing Services O. Reg. 453/07 - Financial Plans O. Reg. 188/07 - Licensing Of Municipal Drinking Water Systems O. Reg. 169/03 - Ontario Drinking Water Quality Standards O. Reg. 243/07 - Schools, Private Schools And Day Nurseries O. Reg. 229/07< - Service Of Documents
Ontario Water Resources Act	O. Reg. 525/98 - Approval Exemptions O. Reg. 450/07 - Charges for Industrial and Commercial Water Users O. Reg. 129/04 - Licensing of Sewage Works Operators O. Reg. 387/04 - Water Taking R.R.O. 1990, Reg. 903 - Wells
Water Opportunities Act	O. Reg. 40/11 – Water Technology Acceleration Project
Environmental Bill of Rights	O. Reg. 73/94 - General   O. Reg. 681/94 – Classification of Proposal for Instruments
Environmental Protection Act	O. Reg. 524/98 - Environmental Compliance Approvals — Exemptions From Section 9 of the Act
Health Protection and Promotion Act (Ministry of Health and Long-Term Care)	O. Reg. 318/08 - Transitional – Small Drinking Water Systems O. Reg. 319/08 - Small Drinking Water Systems
Development Corporations Act	O. Reg. 304/04 – The Walkerton Clean Water Centre