Original metadata (https://data.ontario.ca) (English, HTML)

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Publisher-reported update

2026-08-12

We've made tables that include the 21 drinking water quality threat activities, set out in O. Reg. 287/07, which may pose a risk to a municipal drinking water supply. The tables also provide all the circumstances associated with each threat. The tables separate drinking water quality threats into two sections: chemical and pathogen.

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