Drnking Water-Sourc Protection
Halton-Hamilton Source protection region website
Documents and Maps>Maps

Provincial Mapping 

Use the new Source Water Protection Information Atlas to show where the vulnerable areas are in relation to a property of interest.  Try it for your property. 

On the "Search By" page, type in your address, press search, and details will be displayed of which source protection area the property is located in, whether the property is within a vulnerable area to which source protection plan policies apply, with other information.  

Halton-Hamilton Source Protection Region Mapping 

The Halton-Hamilton Source Protection Region comprises the jurisdictions of Conservation Halton (The Halton Region Conservation Authority) and the Hamilton Conservation Authority.  The boundaries between the neighbouring conservation authorities were realigned slightly to reflect the drainage patterns better and the extension of the in-water area to the international boundary in Lake Ontario. Maps showing the two source protection areas are available for review and download here:

Many maps have been produced to visually show the outcome of the many delineations and assessments that are part of the source protection planning program and required by the Clean Water Act, 2006, its regulations, and the Technical Rules: Assessment Report.   

The vulnerable area mapping includes individual maps for each wellhead protection area and intake protection zone, as well as maps for the highly vulnerable aquifers and significant groundwater recharge areas at the Source Protection Area scale.  

Areas where significant threats are possible have also been mapped and can be downloaded from the drinking water threats webpage.  These areas are primarily within a portion of the wellhead protection areas.  The only significant threats outside of these areas are those identified through event-based modelling along the Lake Ontario shoreline and are part of the intake protection zones. 



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This project has received funding support from the Government of Ontario.
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