WellReport uses Ontario's provincial well records, published by the Ministry of the Environment, Conservation and Parks. There are approximately one million records.
Records may include a well's location, how it was constructed, its depth, ground layers and water measurements. You may see them called MOE well records, after an earlier name of the ministry, the Ministry of the Environment. The part that lists the ground layers is known as the well log.
These records contain information sent to the province about wells. Some details are missing, and some records have not been fully typed into the province's database.
A dot on the map shows the location in the record. That location may not be exact. The province rates how far off each filed location could be, from under 3 metres to more than 3 kilometres, or not rated at all. Each well's page shows its rating. A nearby dot does not prove that the well belongs to the property you searched for. If no records appear on the map, there may still be wells there.
How a location was found depends on when the well was constructed. On older records, the driller drew a sketch map, and the coordinates appear to come from it. Since about 2004, the driller usually gives the coordinates. On about 105,000 records, mostly from 1985 to 2002, the province marks the location as the middle of the lot, even where the paper has a sketch. The original record shows any sketch.
Well records from the province's July 2026 release. The newest record in it reached the province on June 26, 2026. When the province publishes a new release, this site loads it.
A website update does not mean a well has been inspected or its record changed.
We turn recorded codes into words and explain unfamiliar terms. Depths and water levels appear in metres and feet. Flow rates appear in imperial gallons per minute (GPM) and litres per minute (LPM).
We follow written rules when showing the information. If our page differs from the source record, a note explains what changed and why. We never change the province's own records, and we never send them anything.
The Original record (PDF) link opens a scanned copy of the provincial record when one is available. Some records have no available scan.
The charts summarize records for wells inside the selected circle. Each bar shows how many records fall into a range or category, such as a depth range or drilling period. The number of records with usable information can differ between charts.
The flow-rate chart uses the recommended pump rate recorded for each well, where available. It does not measure today's water supply.
These summaries describe the selected records. They do not establish water conditions at a particular property or across a neighbourhood.
The provincial well-records dataset · Disclaimer
Contains information licensed under the Open Government Licence – Ontario.
House numbers: Statistics Canada, National Address Register (December 2025). Reproduced and distributed on an 'as is' basis with the permission of Statistics Canada.
City house numbers also use the Statistics Canada Open Database of Addresses, built from municipal open data. Contains information licensed under the Open Government Licence – Canada.
Contains information licensed under the Open Government Licence – City of Cornwall.
Includes address data made available by the City of Burlington under its Open Data Terms of Use, and by the City of London under its Open Data Terms of Use.
Map and Satellite credits are shown on the map.
Printing is not available yet.