Ontario Drinking Water Threat Activities and Associated Circumstances

Ontario's tables list the 21 drinking water quality threat activities defined in O. Reg. 287/07 that may pose a risk to municipal drinking water supplies. The tables, provided by the Government of Ontario, also detail all circumstances associated with each threat, separating them into chemical and pathogen categories. The dataset was last updated on March 25, 2026.

Use Cases

• Classify potential drinking water contaminants based on the listed threat activities.
• Assess regulatory compliance for land-use planning near municipal water supplies based on the associated circumstances.
• Model risk pathways for waterborne pathogens based on the pathogen-specific threat section.
• Prioritize environmental monitoring efforts based on the categorized chemical threats.

Strengths

• Lists 21 specific threat activities defined by Ontario Regulation 287/07.
• Provides associated circumstances for each listed threat activity.
• Separates threats into two distinct categories: chemical and pathogen.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Government of Ontario

Collection Method

Compiled from regulatory definitions in O. Reg. 287/07.

Freshness

Last updated 2026-03-25 12:01:24.721577; freshness should be verified.

Geography

Ontario, Canada