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Provincial Groundwater Monitoring Network

The Provincial Groundwater Monitoring Network (PGMN) datasets report on ambient (baseline) groundwater level and chemistry conditions. Groundwater monitoring map Ministry contact: Environment, Conservation and Parks

Additional information Tags

• Environment and Nat... Environment and Natural Resources
• Environment and energy Environment and energy
• aquifer aquifer
• groundwater groundwater
• water water
• water levels water levels
• water quality water quality
• wells wells
• water management water management
• EMRB EMRB
• equity equity

Geographic coverage Ontario Last Validated Date February 1, 2024 Update frequency Yearly

Provincial Groundwater Monitoring Network

Learn more about accessing data using different formats. Date range: January 1, 2002 - December 31, 2024 * ZIP Water levels English Last Updated: August 29, 2025 Zip files contain data files. Explore * ZIP Water chemistry English Last Updated: August 29, 2025 Zip file contains data files. Explore

Date range: January 1, 2001 - December 31, 2023 * SHP Water wells English Last Updated: February 1, 2024 Zip file contains GIS Shape files. Explore * XLSX Water Wells English Last Updated: February 2, 2024 Explore

Date range: January 1, 2001 - December 31, 2021 * ZIP Precipitation English Last Updated: February 1, 2024 Zip file contains data files. Explore

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Supporting Files

• PDF Metadata English Last Updated: October 24, 2023 Explore
• PDF Metadata French Last Updated: October 24, 2023 Explore

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