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

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Publisher-reported update

2026-08-19

Industrial wastewater monitoring data submitted quarterly to the Ministry of the Environment. This reporting is required by the Effluent Monitoring and Effluent Limits (EMEL/MISA) Regulations. Data is available by individual years. *[EMEL]: Effluent Monitoring and Effluent Limits *[MISA]: Municipal Industrial Strategy for Abatement

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